Please wait a while editionPrevious: >>2939599>New to /ham/? Read this shit!http://www.arrl.org/what-is-ham-radiohttps://www.fcc.gov/wireless/bureau-divisions/mobility-division/amateur-radio-service>Your search engine of choice works well too!>The FAQ is now back:>https://wiki.cybsec.io/index.php/HamFAQ>OP, the cybsec domain is gone.>NEW FAQ is updated to preview 15https://files.catbox.moe/aftx43.htm>The wiki is down but is archived: https://archive.is/PjR5s>Idiot's Guide to Coax Cablehttps://www.pcs-electronics.com/guide_coax.php>Looking for frequencies to monitor near you?http://www.radioreference.com>Basic Rx loop fundamentalshttps://www.w8ji.com/magnetic_receiving_loops.htm>DIY SWL Mag. Loophttp://www.kr1st.com/swlloop.htm>Small Tx Loophttp://webclass.org/k5ijb/antennas/Small-magnetic-loops.htm>In Depth Loop articleshttp://www.kk5jy.net/magloop/>Homebrew RF Circuitshttps://www.qsl.net/va3iul/Homebrew_RF_Circuit_Design_Ideas/Homebrew_RF_Circuit_Design_Ideas.htm>NEW Libraryhttps://mega.nz/file/UCgEGAjb#rwNcnMAQCUUbSp8supsFvn9QEHCWUW86eLcZa16ZG4Y>Online Practice Tests:http://aa9pw.com/https://hamstudy.org/https://hamexam.org/> Real-Time Propagation Datahttp://prop.kc2g.com/>Space Weatherhttps://www.swpc.noaa.gov/communities/radio-communications>WSJT-X Home Pagehttps://wsjt.sourceforge.io/wsjtx.html>Homosexual (ft8) guidehttps://www.g4ifb.com/FT8_Hinson_tips_for_HF_DXers.pdf>APRShttp://www.aprs.org/>Weather Fax resourceshttps://www.weather.gov/media/marine/rfax.pdfhttps://weatherfax.com/stations/>point to point predictions, its free and will give you an idea of how much power/ what frequencies to use to reliably talk to your friendhttps://www.voacap.com/hf/>how do I into Morse code in a good way?https://pastebin.com/HByjfN4F>Shortwave radio schedulehttps://shortwave.live/
>For the h8ers
CQ contest CQ contest
the chad scanner
>>2952437>already seething
>>2952435seethe cope
>>2952440k
>>2952441
>new thread>he's already having a meltdown
Just the eternal reminder to never, ever pay the antenna jews to dx.
>>2952469I guess this would complicate the image, but a tree can hold more than 1 antenna and if you're using an auto tuner, that tuner can act as a switch.Dig a trench, run one line for your really long wire and run another line for something like a dedicated 6 meter antenna.
>>2952478Why would you need more than one antenna?
>>2952491On HF? Are you pulling my chain?
>>2952491Separate antennas work better if you make them fir each band. A dipole for 40m will wirk better on 40m than a multiband antennaike an off-center feed dipole.But for me, idc. I use the ocfd. I had a fan dipole that was less noisy, but a trees during a storm brought it down. The thing was a bitch to tune. Not to mention the spacing of each element. If I do something in the future, I'll just make traps. It has issues I don't like but the atu can fix the main one.
https://www.kleinanzeigen.de/s-anzeige/berggeist-cb-funk-relais-repeater-set-11m-70cm-/3217335626-168-8980well?
>>2952568Crossbanding 11m and 70cm. Interesting. I just wonder if there will be a feedback loop if you use both the crossband repeaters and keep the same channels on each one. Or would you have to say for example have cb ch 3 as the common cb channel between the twonrepeaters and then have a different channel for the frs radios (e.g. one on ch3 and another on ch4.) OM, where are you on this one? You are the most knowledgable one ITT. Would this create a feedback loop if the same channels are used on both frs? Would setting a ctcss tone help if there is a feedback loop? Just feeling it would if you use the same exact channels on both. I think you would have to have only one common frequency and a different channel on the other.Also, regarding that, you better separate the antennas a bit away from each other on those HTs.
>>2952572the docs say you have to use different cb channels with minimum 200khz distance and you have to position in and out at least 200-300 meters apart.using the same cb channel would definitely create a feedback loop.
Why is it that almost every radio uses noisy mechanical relays for cw? Cost? Because even the higher end rigs for many brands are using loud mechanical relays instead of silent MOSFET. MOSFETs aren't even expensive. What am I missing? I don't understand how anyone can tolerate the atrocious clicking of a mechanical relay while trying to send code.
>>2952578Okay. So you wouldn't be able link them together using the same channel. Thank you for the info! I was legit curious on that one.
>>2952605welcome. but I'm not even sure what this was about. what would be the point of using the same cb channel? it's a classic cb-relay: you send e.g. on cb ch2 and this gets then simultanously repeated e.g. on cb ch39. the pmr radios are the bridge to pass the signal from in to out.there are only two options to repeat a signal: either delayed or transposed. this is the transposed option.
Why do so many hams create catastrophes just to make themselves feel relevant?
>>2952609>but I'm not even sure what this was about.Sorry, I'm having a total dumbass moment when I typed that this morning. I was thinking of something completely different which was wrong anyway.
>>2952666Same reason you post this every single thread.
>>2952430I passed my general exam yesterday, and stopped into HRO to reserve a first right of refusal for an Icom 7300mk2
>>2952584Huh. You have a valid question, I'm not sure. I don't hear the relays on mine while wearing headphones. But I don't run with full QSK break-in either. Not sure what transceiver you are using but you can probably adjust it like mine do.>>2952690Best answer.
what would be best for somebody wanting to use comms for hunting and shit hit the fan stuff?I plan on having a murs vhf regular walkie talkie setup, plus a handheld cb radio setup, then get my ham license down the lineI kind of want to get a baofeng just for receiving until I get my licenseIs this a dumb route? If I want to do woods stuff with my friends I want them to be able to talk back to me. A couple handheld cbs or walkie talkies might suit me better, and keep the ham for any real emergency + just listening to stuffplease tell me if I'm stupid or using terms wrong so I can learn. I know no one in real life that knows anything about this stuff
>>2952568So they are using a UHF link to separate the two CBs because the output will come back into the input channel even if they are separated on the CB band, that's normal, all VHF, UHF relays use huge cavity filters to avoid that. 10m relays have the emmiter and the receiver on different sites.These cavity filters are very steep and very narrow so that for example for a R0 VHF relay the emitter at 145.600 MHz doesn't trigger the 145.000 MHz receiver.Another way to do that is have a CTCSS squelch for the receiver and the emitter doesn't has CTCSS.Cavity filters dimensions are of course proportional to the wavelength so they are ok for UHF, big for VHF and for 11m they would be about 2.5m longhttp://www.amalgamate2000.com/radio-hobbies/radio/cavity_resonator_for_29__mhz.htmNot impossible to make apparently
>>2952759just get some qanshengs and you use them on whatever bands that can be used without licenses nobody cares.If SHTF you can use them on the frequency you like.
>>2952759>huntingGMRS. How's the terrain? You'll have to test out whether you can reach each other. Everything affects everything in radio. If you find dead spots, you can crossband GMRS and MURS with a crossband repeater. There are radios that have this ability. Just have the crossband repeater set to crossband a certain channel on GMRS and MURS (e.g. ch 3 on both), then have your HTs set to those same channels. Set it's antenna up high. >shit hit the fan stuffBetter hurry, SHTF is going to happen. Give it two more weeks.
>>2952819as someone who has used frs and gmrs radios when hunting, you can easily talk over 2 miles.
>>2952816I don't see that CTCSS would help at all. When the receiver gets a signal with sub-tone, its squelch is open. When then the emitter passes the signal, it can interfer with the receivers input. Whether the emitter sends a sub-tone or not.Filtering is very interesting, but has the downside, that your setup is fixed on the two channels in use. If you want to change the frequencies, you have to change the filters as well.Nevertheless, interesting link, thanks for that.
>>2952819>>2952817after tons of more research and your guys recommendations ive decided to go with all of themI have a gmrs radio pair and a ham radio pair coming in the mailnext month Im going to buy murs and cb handhelds tooI'm going to get my gmrs license so my wife can use it. with the repeaters in my area I should be able to radio her while im hunting miles away. I'm going to get my ham license sometime next year, and until then just listen to shit. just like the murs and cb. unlikely ill transmit but I want all of them so I can listen to everything at the same time
>>2952986>JRC JST-245 transceiver>NRD-535D hf receiver above itMan, those still fetch a pretty penny. At one time the 535D was my dream receiver.
>>2952986>buy mursDon't buy it sepatately. Many ham hts can be unlocked to transmit on gmrs and murs. Don't waste your money on separate radios per band.
>>2952952>I don't see that CTCSS would help at all. When the receiver gets a signal with sub-tone, its squelch is open. When then the emitter passes the signal, it can interfer with the receivers input. Whether the emitter sends a sub-tone or not.Of course, sorry I am dumb...
Hey hams. I've been thinking about getting a ham license, more specifically the german class A which would be CEPT or our equivalent to the american amateur extra license.I know everyone is different but how long do you think studying for it would take?I only have very basic knowledge when it comes to electrical engineering stuff but I do come from a math background.My main interest/motivation is SDR stuff which I want to get into so studying for a license seems like a good way to gather some verifiable basic knowledge and get something out of it along the way.Also: If I am licensed, can I get something like a Quansheng UV-5 to give to my wife (or any unlicensed person) and operate/set it up in such a way that I can communicate with her within legal boundaries?Can something like a (more expensive) ham hand radio communicate with one those simple hand radios anyone can buy/use?
>>2953028>If I am licensed, can I get something like a Quansheng UV-5 to give to my wife (or any unlicensed person) and operate/set it up in such a way that I can communicate with her within legal boundaries?just use it outside ham bands with minimal power, nobody gives a fuck as long as yo ustay out of aircraft, military, commercial bands, does PMR 446 MHz exists in Germany ?you can also get a more complex radio like a RADTEL RT-880 or iRADIO UV-98Plus and use it on CB band (27MHz) >>2953028>Can something like a (more expensive) ham hand radio communicate with one those simple hand radios anyone can buy/use?mostly, yes, the qansheng will do VHF / UHF ham bands
>>2953028you will realize, that learning for the license won't give you any useful knowledge. especially in regard to SDR. unfortunately the exam is very outdated and besides useless stuff like learning ITU prefixes, you will be bored to death while learning e.g. the circuit scheme for a highpass filter.consider that if you want not to participate in stupid dx contests and prostata talks anyways, but want to do digi modes, packet radio and experimental radio in general, you really do not need a license. nobody cares for you having a license but that old ham boomers. do not talk to them anyways, they are unbearable.
>>2953002My baofeng will transmit and receive murs, but I want dedicated handhelds so I can monitor more channels at a time. Plus I want to have a type accepted device for every band I plan on talking on. Not because Im a particular fan of the fcc rules and regulations. But because Im just autistic and want a setup for every band lol. Plus if I have lots of friends I plan on hunting with, which I do. I want the choice to talk on a bunch of different channels, and if I have two ham handhelds that can transmit murs, and if I have two murs handhelds, 4 people can effectively communicate now.
>>2953057>more channels at a timeScanning is a feature on almost every HT.>Plus I want to have a type accepted device for every band I plan on talking onIf you want to throw money away for this reason, then okay.>and if I have two ham handhelds that can transmit murs, and if I have two murs handhelds, 4 people can effectively communicate now.Or you can get 4 ham radios that are unlocked. There, you now have 4 radios that you can listen to murs on. Not to mention, you can create custom channels on them on the same murs frequency using ctcss tones. Then scan through them.Your autism is going to make you waste money.
>>2952986>I'm going to get my gmrs licensewhy?
>>2953030>just use it outside ham bands with minimal power, nobody gives a fuck
>>2952430best design for AM loop antennas for the rtlsdr? i dont feel like running 80m of wire down the street to pick up fuck all
>>2953057>so I can monitor more channels at a time4 radios listening to nothing.
>>2953099>>2953096>>2953092you guys do be laying down some factsdo any of you use cb?
I bought the GPS kit for my Uniden SDS100 only to find out today, that the same day they announced an SDS150 upgrade that has GPS internally.
thinking about getting 2 cobras next month to go with my other radios. looking forward to being racist with random truck drivers
How retarded am I for wanting to buy a IC-756 Pro 3 from a local OM? Includes matching power supply and speaker. Radio looks mint; one owner who didn't use it much. Price is fair. But I'm afraid of the janky reputation of the old style LCD. The cathode to LED mod is easy enough if the cathode backlight dims. But if the display shits the bed, which they do, it's going to be a somewhat expensive nightmare for me to resolve. I hate new radios and this is perfect for me, aside from the questionable reliability of the display. I have decision paralysis.
>>2953110>do any of you use cb?not anymore, no one local.
>>2953110>cbCb dx is cool.The FCC relaxed the distance rule a few years ago, so dx is kosher now. (within legal power limits)
>>2953096GMRS seems like a genuinely useful thing.In my area, theres a bunch of gmrs guys, I can pick them up on my janky little FRS HT. Useful local intel sometimes.Being an actually licensed service, it's way cleaner than cb. No blatant jamming, etc.
Also, for any domestic intel types, there do appear to be 'leftist activists' obviously using cb radios to transmit malicious interference, mostly on 27.375lsb, 27.385lsb, and 27.395lsb.I'm not personally offended by this kind of thing, it just is what it is, but if you want an extra legal angle to go after these degenerates, it's there...
>>2953207I'm a new HAM, I don't shit about radios, but I do know that when a good deal comes around, you take it. Even if the display shits the bed, and you can't repair it for whatever reason, it still comes with all of the other shit. You'd still be up.
>>2953232I'm planning on getting a portapack or tinysa ultra, it'd be pretty easy to find the source of that transmitter pretty easy with one of those right?
>>2953238Well, not as easy as you'd initially think.Sure, it's easy to find the spot on the sky where the skip signal is bouncing from, but considering Faraday rotation and ducting, and so on, it's a bit more silly.The 'crying baby' signal is probably west coast, norcal, oregon, or washigton, for example.At any rate, you can basically tell if a thing is coming from the east or the west by listening to the transition along the 'grey zone', (the fuzzy area of the skip signals as they go along at dusk or dawn)I.e, My reception of said 'crying baby' signal is inversely proportional to my reception of signals from legitimate stations on the east coast.I'm basically exactly on the centerline of the continental US, so I can hear both coasts equally well, but my null zone means I can't hear central US stations.
>>2953232> leftist activists' obviously using cb radios to transmit malicious interference, mostly on 27.375lsb, 27.385lsb, and 27.395lsb.Why are they like this?
>>2953247I don't know, but it's fucking stupid. Literally no one is using god damn cb for actual operations. They're just punching at ghosts at that point. it's just off-the-wall silly.
>>2953232thats your local rfi from a shitty power supply or something. you need to take your meds now.
What would be a good handheld radio that can be considered "one tier up" in quality from baofeng/quansheng?At first glance it seems like there is the 30 dollar chink shitand next there's the 300-400 dollar kenwood devices.Something at ~100 - 150 dollars price wise?> purpose?Currently studying for my license, I just want something to play around with and still have it be useful later.
>>2953110 I do have the channels in my scanner since I live in bumfuck nowhere where no one knows gmrs nor murs. They use cb. The only exception with murs is car dealerships and Walmart. I even have my family using dmr and encryption on murs since it's not used at all. I even recorded the channels on my sdr just to see any activity and there is none. >>2953250>Literally no one is using god damn cb for actual operations. Nta: Businesses around here still do, which is dumb imo. They want to keep their comms private and not have anyone know what's going on at job sites, yet they use a free public service. Families and duch also use CB. Hams are considered genius level shit here.
>>2953028To answer your last two questions; you need to study up on your country's amateur radio regulations. Licenced talking to unlicenced radio operators within (or outside!) the designated amateur bands is probably strictly verboten. Just obey the rules and you'll have no problems and keep the hobby enjoyable for all.>expensive radio communicate with cheaper radios?As long as it uses the same frequency and modulation, it doesn't matter. I've used my 32 year old $700 HT to communicate with a $30 piece of of crap (Baofeng) without issues. Ideally you should check to see if the communication authority in your country has equipment requirements that the radio be type-certified for amateur band use.Other than that I can only suggest you check out a local radio club to see what it's like. Undoubtedly you'll find someone technically proficient with SDR's who will be a wealth of information.
>>2953237>I'm a new HAMthat's hugely obvious when you spell it with all caps.
>>2953262probably a decent second hand yaesu or icom handheld.a baofeng/quansheng will get the job done if you are just wanting local repeater connections.
Can someone brief me on the whole Quansheng v2 situation?Should I avoid getting one if I can't reliably get a v1?Are people (successfully) working on adapting the good firmware for the newer hardware revisions or is that unlikely to happen?
>>2953273>businessesWeird.Why not just get a business radio license?Shit isn't expensive at all.
>>2953261>local rfi is playing music, recordings of Trump, and various looped sound effectsKek, I figured I might find one of you here.What is even the goal of these operations?Like who are you even trying to jam? The handful of autists and old farts dxing on cb? I mean, are those guys that worthy of an enemy? They're just trying to enjoy their hobby, which has literally nothing to do with anything political.
>>2953096nah I am still thinking about getting my gmrs license when the fcc opens back up, and get my ham license sometime next yearI want to be able to radio my brother on the other end of the state regularly with repeaters. I'll need at least 1 gmrs license between the two of us to do that for a long period of time without people getting mad, or the fcc writing us a very strongly worded letter and add our name to the wall of shame
>>2953448>repeatersWhat is the distance between you two as the crow flies? Can you already hit a ham repeater on certain towers? Will you be using an HT, or will you be using a base station? There's always lots and lots of variables that go into this.
>>2953448You'd want to double check me on this, but I think the family member thing is household, like in that scenario you'd each need a license, since you live in different residences.
is the hackrf portapack worth it? and i know there are multiple hardware revisions or some shit so what is the "most up to date" revision?
>>2953030> PMR 446 MHz exists in Germany ?Yes it does.I see so there is nothing special about devices like pic related except that they limit their frequency range and output power .So as long as I set a handheld ham radio to those frequencies, and don't start blasting with too much energy, things would remain legal (roughly speaking), which means that would be one way to communicate with unlicensed friends and families within legal boundaries.>>2953282> Licensed talking to unlicensed radio operators within (or outside!) the designated amateur bands is probably strictly verboten.Even in the example above?> study up on regulationsWill do> visit the localsI'll probably do that as well, but only after I've at least learned some fundiesAnyway thanks for the help brehs
>>2953456If i recall it says specifically "you and your immediate family"which while thats not my permanent residence I do visit him on a weekly basis, and my brother is the only blood family I have besides my daughter. So I'll double check (although the fcc literally will literally never ever give a shit) but I'm pretty sure the definition is vague>>295344940 miles between us, and theres a repeater inbetween us. I can pick up the repeater anywhere in the county practically, even with an FRS radio. I guess "across the state" was me being a little hyperbolic. But I am pretty damn certain we'll be able to talk>>2953460the h4m is the way to go I think. I'm gonna buy one of the already assembled deals next month. Also yes it is super super worth it. I do a lot with radio in my work, but I also just fucking love scanning and listening to stuff. You can do so much with the portapack h4m its not even funny
>>2952430Any Canadian jambons? I've been reading a lot about radios, and loved the class during my undergrad (EE). The links I see in the sticky are all US. Anyone care to talk about their experience in the north?
>>2953570If the repeater's antenna is up on a high tower (though they have restrictions), then you should have no problem even if the repeater can only output 50 watts legally on GMRS. Though that's provided there are no issues between your brother and the repeater. The main ham repeater I use is 21 miles away from me and I can hit it full clear with an HT. Though granted its antenna is 200ft up the tower and the people who run it are your nerd of nerds about repeaters. Funnily enough, some of them are Extras who don't really care about HF. >I guess "across the state" was me being a little hyperbolic.That was the main concern since across the state can mean many distances. But 40 miles isn't much. If you want to experiment, you might want to think about a base station and see if you can reach each other at 50 watts without the repeater. I wouldn't be surprised if you could reach him, though it may be extremely hard to pull out of the noise. You could also use directional antennas which would help a lot.
Is there any probability of Icom launching a 9700mk2? I'll wait for the 7300mk2, but I have no idea how product line updates work in this industry.
>>2953708>Is there any probability of Icom launching a 9700mk2?Yes. 7300 mk2 was lauded for use of more modern interfaces such as USB-c. They will probably realise that a refresh of 9700 will be equally well received.>I'll wait for the 7300mk2, but I have no idea how product line updates work in this industry.Way too long. Icom, Yaesu and Kenwood are way too conservative. For my part, I'd like a FTDX-9000D mk2.
Is pic related approachable for beginners who want to dive a little deeper than "just learn the questions", can they be used for from 0 learning?Or are they more of a reference for people with intermediate/advanced knowledge of radio and electronics?
>>2953638>50 watts at 40 milesI mean, you could do that with 5 watts.
>>2953925Nah, it's approachable. You'll be fine.
>>2953927Only if you got absolute perfect line of sight and the planet and stats align, or if you got a repeater put together by a lot of radio nerds. You got conned by blister pack radios that promise 20 billion light year range. What does the border of our expanding universe sound like?
>>2953946
>>2953927I can hit a repeater 50+ miles away on low power (10w) and the tower is on the other side of a mountain of which I live at the base of. Every propagation simulation I run says its impossible, yet I'm living it daily. I figure the mountain is causing a scatter effect. Not sure if that's the correct term, but there is a phenomenon where 2 meter signals can follow the curvature of a hill or mountain and scatter over the top in a broad radiation pattern. Never know what's going to happen until you try.
poor nigga hours
>>2954143What's a good basic antenna upgrade for the Quansheng?
>>2954149ABBBREEEEEEEEEEE
Is there really anything that could go wrong if I use my handheld ham radio on a currently unoccupied frequency or pmr446 frequency at like 500mW to 1W and maybe a stubby antenna?> get a licenseI am very much interested in doing so.Just thinking about ways I could practically use my radios on a small scale like occasional hiking, inside a house or between two cars driving somewhat closely to the same destination, shit like that.Obviously most of these things are illegal or barely illegal (for example using pmr446 frequencies at 500mW is fine but the radio isn't supposed to have a detachable antenna) considering I would not announce my callsign and/or hand another radio to a friend and such.But if I do things like that I wanna do them in ways that do not bother anybody.
>>2954149hes right>>2954159the abbree folding whip antennas are pretty good. These tidradio ones came with my baofengs. They're also solid, but I'm buying x2 42" abbree whip antennas next month sometime
>>2954161not unless you get unlucky or piss someone off
>>2953460it's cheap as shit and good enough. i'd wait for the hackrf pro to drop though. fixes a lot of issues like frying the LNA + has better selectivity and filtering
>>2953460The main advantage imo is that it's a hackrf that costs way less than "the original".That it comes with the whole portapack stuff was just a kind of bonus to me, the build quality is very poor and it's very cheap plastic.I would not feel comfortable throwing this thing in a bag without some kind of foamed hardcase and even then I don't believe the portapack buttons will last long.But the newer model 4 comes with USB-C which is a nice plus because I fucking hate micro USB so much it's unreal.
Roger beeping.Yes or no?
>>2954176there's a guy a couple miles from me that rants on GMRS almost every night. non stop cursing and slurs and whatever. he's been reported to the fcc many times. FCC does not care about enforcing any rules if you are not some company or corporation.
>>2954196it pisses of sad hams, so YES.
rofl found some random retard on UHF that has vox left on or her ptt is pressed against her bag and at some fucking church choir practicelmao. shes dropped so much drama on the local karens. theyre singing fucking church songs and shit my wife and i are losing our shit over this
>>2954258That's pretty funny
> buy cheap hand radio to listen to local radio talk> expect to laugh at old farts talking about stupid shit> catch first conversation between two older hams on 70cm> one is giving the other an update on how things are going after his sister died and that he is now also scared about losing his job which could fuck up his retirement plans and that someone backed into his car and he has no idea how he is supposed to pay for that. And that he doesn't want his wife to think less of him because he has trouble providing.
>>2954346Wow, now all you have to do is jam them by screaming racial epitaphs over their conversation. You can celebrate your success by coming back here to troll other users in this very thread. Epic high five!
>>2954346I've been saying this for years. most ham radio conversation are the same shit you could listen to from the old cordless phones.either boring, or depressing.
>>2954355Why would I do that?
>>2954371
>>2952478That project is now in the books. I have 2 hf radios and 2 tuners.Connected are>6 band vertical>40 meter dipole about 40' in the tree> 80 meter dipole about 50' in the tree>6 meter loop in the tree>160m inverted L starting in this tree and going across the yard into another treeI'm happier than a pig in slop, especially with 6 dxpeditions under way.
>>2954440* that's 5 antennas. I also have a switch in another room where the incoming coax is for the 80 and 160 antennas.
>>2954440>I'm happier than a pig in slopcongrats anon, can you listen to dipoles and emit on verticals for example ? To listen to a less noisy antenna and emit on the antenna with the best take off angle for DX ?
>>2954001I don't have to deal with any mountains, but the low rollings hills and short, dense, brushy forests here have similar strange properties. Under certain atmospheric conditions I regularly pick up signals from little 0.5w HTs that are way out of commonly accepted range.
>>2954196A lot of people don't like them, but I'm personally a fan.I like to listen for very faint signals, and a lot of the time the situation will be that I legit can't tell if a section of noise I'm listening to is just noise or a signal so garbled and faint I can't make it out.However, if they're using a roger beep, that often enough is just enough to stand out from the noise in a clearly identifiable way.Bit of a niche use, I'll admit, but it certainly helps.
>>2954478Yes and no - and I'm still learning.I quickly learned that transmitting on one band blows out the receive on another radio's band which is close in frequency or harmonic.My biggest lesson is that the 'just chuck a wire in the tree' meme is based in reality.I have had the vertical in place for years by only drilling a 1" hole through the wall big enough for 1 run of LMR-400 and have worked ~250 entities and am darn close to a WAS Triple Play.Recently I had the bright idea that I could snake 4 very short runs of R-8X into that same opening, then LMR-400 to the tree and into the shack.I dusted off my spare FT-891 and after about $250 later (coax and conduit), I have 5 great antennas and 2 HF radios on the air.I want an antenna designed for 6 meters? It's a click away.Same with 160 meters. And 80 meters and 40 meters. And it turns out the harmonics between the group (plus the vertical) cover all the gaps. It's the best and most simplest upgrade I failed to think of. I reserved such luxuries to 'contest stations' or 'clubs'.>Oh wow is me, let me switch antennasSorry for the ramblings, but to your point about comparing a vertical to a dipole, it's been neck and neck. A 30' vertical pole with a healthy radial setup and a 120' dipole up about 50' have been neck and neck.I've picked up a few in the past day on the dipole(s) which I hadn't snagged on the vertical.It's the breadth/diversity that drives it home. >My antenna sucks on X meters>Click>This antenna rocks on X meters!!>Look at the next screen>Anyone worth working while we get through the pileup on the other screen?
>>2954001Sounds like you're describing 'knife-edge diffraction'.>>2954506Not enough antennas. Now you need to put up matching dipoles perpendicular to the other ones. That way you can switch back and forth to find the best signal. :^) By the way, what coaxial switch are you using? Do you have recommendations?
>>2954196I kind of like the ones that give a low amplitude/short duration "pip" sound when you unkey the mic only. I can't stand echo mics, though.
>>2954196On simplex: fuck yes. On repeater: no. The repeater itself has its own roger beep. The squelch tail itself tells you when the transmission is over, but I just like that extra beep to confirm.>>2954440>>2954506Congrats on the project, anon. Pictures of finished product? I'd be interested in how you did the 6 meter loop and 160m inverted L. Especially that 160m inverted L.>>2954240They never do unless you are causing actual damage like tying up an emergency repeater or trying to direct firefighters towards a certain area when you are not supposed to be on any emergency frequencies. Just change the channel or if you want to coordinate with your local shitposters, make a custom channel on your ht set to one of the gmrs channels with a ctcss code.
>>2954532>coaxial switchkek, 2X LDG AT-200s for 4 of the antennas and a Daiwa 2 way for the 5th. I agree - not enough antennas on 1/5 of an acre. Maybe I'll setup a 160m phased array tomorrow.>>2954540It's a bit hard to take pictures of such large wires, but I can share links. The 6 meter delta loop has been awesome and isn't much more trouble than a dipole. Get an arborist's throw bag and some string and find a high tree limb and you have a tower given to you by God. It also works well on 12 and 17 meters.https://km4nmp.com/2019/06/22/6m-delta-loop/Similar thinking with the "L". Cut a wire to about 126.5", string it in the tree with help from that arborist's bag, and you'll be on the air before you know it.https://www.zerobeat.net/g3ycc/invv.htmRun coax to said tree, then connect both runs of coax to the back of your tuner and abracadabra, you're me! Now make 2 more antennas and runs of coax!
truckers on MURS talking shit about their wives will never not be funny
>>2954535what's an echo mic?
So those big sexy radios typically list/advertise only HF, but can they be used basically for any frequency like VHF and UHF too, given the right antenna?Or are they really only (useful) for <= 100mhz?
>>2954630NO ?
>>2954631no what?
>>2954630Some do HF VHF UHFThey do what they say they dohttps://www.rigpix.com/From the 3 main manufacturers :KenwoodTS-2000 10-160 m + WARC/6 m/2 m / 70 cm AM / FM / NFM / SSB / CW / FSK 100/100/100/50 W 2000 23 cm/10 W option. DSP. Twin RXTS-2000LE 10-160 m + WARC/6 m/2 m / 70 cm AM / FM / NFM / SSB / CW / FSK 100/100/100/50 W 2006 23 cm/10 W option. DSP. Twin RXTS-2000X 10-160 m + WARC/6 m/2 m / 70 cm/23 cm AM / FM / NFM / SSB / CW / FSK 100/100/100/50/10 W 2000 DSP. Twin RXTS-B2000 10-160 m + WARC/6 m/2 m / 70 cm AM / FM / NFM / SSB / CW / FSK 100/100/100/50 W 2000 23 cm/10 W option. DSP. Twin RXIcomIC-705 10-160 m + WARC / 6 m / 2 m / 70 cm AM / FM / SSB / CW / RTTY / DV 10 / 10 / 10 / 10 W 2020 D-Star. RX: 0.03-200 / 400-470 MHzIC-706MKIIG 10-160 m + WARC / 6 m / 2 m / 70 cm AM / FM / NFM / SSB / CW / RTTY 100 / 100 / 50 / 20 W 1999 RX: 0.03-200 / 400-470 MHzIC-7000 10-160 m + WARC / 6 m / 2 m / 70 cm AM / FM / WFM / SSB / CW/RTTY 100 / 100 / 50 / 35 W 2005 IC-7100 10-160 m + WARC / 6 m / (4 m) / 2 m / 70 cm AM / FM / WFM / SSB / CW / RTTY / DV (D-Star) 100 / 100 / (50 W) / 50 / 35 W 2013 IF-DSP. Touch-screenIC-9100 10-160 m + WARC / 6 m / 2 m / 70 cm AM / FM / SSB / CW / RTTY / (DV) 100 / 100 / 100 / 75 W 2010 23 cm/10 W and DV (D-Star) options. DSP
>>2954633YaesuFT-100 10-160 m + WARC / 6 m / 2 m / 70 cm AM / FM / SSB / CW 100/100/50/20 W 1998 DSP. RX: 0.1-970 MHzFT-100D 10-160 m + WARC / 6 m / 2 m / 70 cm AM / FM / SSB / CW 100/100/50/20 W 2000 DSP. RX: 0.1-970 MHzFT-847 10-160 m + WARC / 6 m /2 m / 70 cm AM / FM / SSB / CW 100/100/50/50 W 1998 RX: 0.1-512 MHz with gapsFT-857 10-160 m + WARC / 6 m / 2 m / 70 cm AM / FM / SSB / CW (WFM RX) 100/100/50/20 W 2003 DSP optionFT-857D 10-160 m + WARC and 60 m / 6 m / 2 m / 70 cm AM / FM / SSB / CW (WFM RX) 100/100/50/20 W 2004 DSPFT-897 10-160 m + WARC / 6 m /2 m / 70 cm AM / FM / SSB / CW (WFM RX) 100/100/50/20 W 2001 DSPFT-897D 10-160 m + WARC and 60 m / 6 m / 2 m / 70 cm AM / FM / SSB / CW (WFM RX) 100/100/50/20 W 2004 DSP and TXCOFT-991 10-160 m + WARC / 6 m / 2 m / 70 cm AM / FM / SSB / CW / RTTY / PSK / DV 100/50/50 W 2015 "Fusion" concept. 32-bit IF DSPFT-991A 10-160 m + WARC / 6 m / 2 m / 70 cm AM / FM / SSB / CW / RTTY / PSK / DV 100/50/50 W 2016 "Fusion" concept. 32-bit IF DSPFTX-1 Optima 10-160 m + WARC / 6 m / 2 m / 70 cm AM / FM / SSB / CW / DV 100 / 100 / 50 / 50 W 2025 "Fusion" concept. Twin RX.
>>2954633>They do what they say they doI see, thanks
>>2954635I've come to prefer dedicated rigs for 2 meters and 70cm. I don't want the local repeater or allstar shitting up my cw rig. I think the single band Japanese mobile units from the 90s are just right for 6m/2m/70cm. The backlights are often 5mm incandescent bulbs instead of shitty leds; way more comfortable to look at. And the 90s rigs are usually built more robustly. Plus most new radios are ugly to look at.
>>2954630>So those big sexy radiosThese are hot.>typically list/advertise only HF,True, though most do MF (like 1.8 MHz), some also LF (470 kHz) and VLF (136 kHz)>but can they be used basically for any frequency like VHF and UHF too, given the right antenna?In themselves, no, but you can use transverters, in which case you need the appropriate antennas.
>>2954680>some also LF (470 kHz) and VLF (136 kHz)Transmit? Can you name one? I've only seen stand-alone single band units.And, no bully, but i'm going to be 'that guy' and correct you that 470 kHz is MF and 136 kHz is LF. :-)
>>2954629One of these, at the 9m15s mark: https://www.youtube.com/watch?v=MSCLHp0mUHg [Embed]First time I heard one of these was back in 1986 in a buddies Camaro. His had a slider switch that adjusted the echo repeat up to 2 seconds duration, irc. and it also had a roger-beep function.
>>2954691huh interesting, but yeah I can imagine these getting annoying pretty fast
I wanna into morse.To train listening Koch method clearly seems best and OP links https://www.aa9pw.com/morsecode/ which seems neat.Pic related at least sounds cool to play around with, are they any good? Or would it be a waste of money?
>>2954762Check out CW Academy by CWops. Its four courses, each two months long. I went from knowing zero code to copying at 35wpm in a little over a year thanks to CW academy. Just get yourself an iambic practice keyer and a good quality paddle. The Morserino32 is neat because it works as a keyer, training device, and a USB interface for your paddle.
>>2954783> check out cw academyWill do, thanks.> MorserinoOh those look nice. Sad they removed the LoRa option on the newest model. But morsing between two devices still seems like a fun way to practice if I manage to rope someone else in. Would I be able to hook up any kind of morse button/paddle to this?Also are there any cheap handheld or battery powered radios that are able to do CW ootb? I saw that even a quansheng can be patched to be able to do it.
>>2954802Yeah the morserino was a great kit to build in its previous generation. Now its preassembled with surface mount components. Something about sourcing the esp module gave them trouble with maintaining supply chain for the old design. The Lora feature is cool in theory, but do you actually know anyone else with a morserio to use it with? Probably not. Where it excels is in its ability to function as practice keyer and USB interface for your key.When learning, its handy to be able to see on your PC/laptop screen the code you've sent. Send a chunk of code during practice, then check to how accurate you really were. You can connect any key/paddle to it. But when learning, you should be using a dual paddle for iambic keying. Don't learn on a straight key.
>>2954690>Transmit? Can you name one? I've only seen stand-alone single band units.One of the Kenwood rigs (890 or 990 I think) can emit a signal on one of those bands but you need an external amp and tuner to get on the air.>And, no bully, but i'm going to be 'that guy' and correct you that 470 kHz is MF and 136 kHz is LF. :-)Bah! Yes, you are right! And how will I live this down? Why, yes, I am anonymous. Now I have to get a 3 km antenna.
>>2954849>will I live this down?>Now I have to get a 3 km antenna.You won't, that would based as hell if you were not sarcastic about it.
Did I fuck up my pcb design so pram (U2) sees noise? Long story short I making a cartridge for zx spectrum, and that thing has pico as well as PSRAM chip. Whenever I plug my custom ZX Spectrum cartridge in, the PSRAM starts spitting errors on a self test — even if the board’s powered by USB and the +5 V from the Spectrum is cut.ZX address/data lines (A0–A15, D0–D7, MREQ, RD, etc.) go through 74LVC245s for level shifting to 3.3 V. Spectrum ground is tied to the same plane as everything else on the board.If I cut A0–A7 lines from spectrum (by an adapter board), PSRAM self test passes. So it feels like the Spectrum’s bus noise or ground garbage is messing with the PSRAM/flash.gpt suggests the following – Separate ZX/buffer ground and tie it to main ground at one point?– Add ferrite or resistors between ZX 3V3 and main 3V3?– Series resistors on each ZX line?– Some shielding or layout trick I’m missing?But I am just a beep boop guy I don't know this high rf woodoo magic. RP2350 runs at 280mhz, PSRAM is driven at around 100 and spectrum is only 3mhz.
>>2954937Ah, psram is actually U11, U2 is the buffer
>>2954826NTA, but what's wrong with a straight key?
why do "slinky" antennas work? i thought you needed the linear surface aria of the wire to catch the EM wave? or is it because its a wave it doesnt* care what shape it is
>>2954849>One of the Kenwood rigs (890 or 990 I think) can emit a signal on one of those bandsThanks for this. I looked a bit into this. It looks like they send a signal to a port that can be used for transverters.Man, the TS990 is a big radio. I like knobs and buttons and a minimum of menu's on my rigs but holy cow that one has a lot of buttons! My TS690S is just the right size, buttons laid out nicely, and a beautiful display. :-)
I really want an ICOM IC-705
>>2954826>Don't learn on a straight key.nta but that piece of advice goes against what I was taught. I'm curious what your reasoning is?
>>2954937>zx spectrumOkay I gotta ask, are you using this in a radio application?
>>2955026Same here, I thought learning straight key first was better because it's easier to go from straight to paddle than the other way around. And then you'll know both.Also straight skill should transfer well to other transport mediums like light etc.Getting those rhythms.
>>2955027Hehe that'd be fun, but unfortunately radio application is using me here because data lines from other device seemingly radiate into my PSRAM inducing garbage.
Any opinions on the quansheng tk11?
>>2955013Pretty sure it's demons
>>2955013Just wait until you see the weird way people zig zag end-fed half waves.
>>2955013might use more of the magnetic component of the field than the electric
>>2954973>>2955026The logic behind learning to key with an iambic paddle rather than a straight key is based on techniques that teach beginners to hear code as a sound rather than counting dits and dahs. Instant character recognition. If you introduce a straight key right away it complicates and slows down that learning process. Beginners start by learning to copy and send single characters at no less than 20wpm with Farnsworth spacing to accomplish this, and that's impossible for a beginner with a straight key. Really depends on your goals I guess. If you want to be sending and copying at 30+ wpm, its more efficient to become proficient with iambic before using a straight key. If you love slow speed code, vintage gear, etc, then go the straight key route. But your progression will likely be slower.
>still no technology to make antennas smaller or filter out multiple signals when Dxingis radio a dead technology?
>>2955099>is radio a dead technology?Yes, go generate porn with IA
>>2955099Yes, it's very dead. Make sure to turn off your wifi so there are no more radios.
>>2954630Those are consumer shitboxes that are designed to be affordable more than functional. If you want wideband Tx/Rx in a single box, your only option is to go high-end corpo and you need to know what the hell you're doing. USRP X310 + UBX 10-6000 daughterboard. This is not an out-of-the-box system so you better be prepared to design your setup.
>>2955100why don't radios use more AI for signal processing and filtering? they'd be kino for signal isolation and information-theory based noise filtering
>>2955128We'll see it in 10 years. Radio manufacturers just now found out about USB-C.
>>2954762>I wanna into morse.no you don't.
>>2955128>use more AI
>>2955128>why don't X use more AIyou really don't know what AI is? or what it is good for?the last thing I want is some AI hallucinating shit and playing that for me.I mean humans can't even get their shit straight on what we see or hear, and you think AI will be able to?
>>2955303apparently you don't, do you think ai means chatgpt or something?perceptrons for adaptive signal reconstruction require much less data than the shannon sampling theorem and are just as reliable (more so, since they hold with far less sampling data): https://waseda.elsevierpure.com/en/publications/signal-reconstruction-from-sampled-data-using-neural-network/for signal isolation, a neural network is perfectly capable of extracting overlapping signals since that isolation can be achieved by calculating the maximum likelihood of a discrete part of the signal. here's some recent success with it: https://asp-eurasipjournals.springeropen.com/articles/10.1186/s13634-022-00956-2i don't know if you know this, but both signal isolation as well as reconstruction have been around for a while. have you never looked into how high end radio astronomy constructs coherent information from the absolute interference clusterfuck that is space across untold lightyears? time-frequency analysis and regularization is used in combination with signal separation (yes celestial bodies emit predictable 'signals' with specific entropy). their signal separation isn't usually 'blind', but they do need it sometimes and tend to be the biggest driver of published research on the matter. both of these things were always theoretically applicable to hams, but the traditional methods required very serious hardware and access to serious compute power which introduced massive latency. that's not the case anymore, per the papers i linked above. many more like them.i respect hams for your practical knowledge, but when it comes to the cutting edge you can surely recognize you're a bit blind? ai is not limited to the marketing buzz products being shoved down your throat. it's just stochastic machinery. information theory is stochastic.
>>2955284I've been eating my ms, my ks and now also my rs since I wrote that.
>>2955325So we have a $1400 dual band HT now, and everyone still buys a $30 baomeme.
>>2955352We have $700 handheld radios and yet the only ones I am allowed to actually do fun stuff and custom firmwares with are $25 Quanshengs.I'm hopeful for the LinHT.And yes I preordered a UV-K1. Thanks chinks.
>>2955099>is radio a dead technology?Ham radio has stagnated where DVI plugs are used on the newest models. Meanwhile, mobile phone radio tech is developing rapidly.>>2955128Stagnation. The main brnds get away with what the have and need very little new. There are minor exceptoins such as truSDX which fails on the analogue side. And AI could be used for cognitive radio but that concept is still alien to ham radio.>>2955325You might like Coherent CW, that does a little bit of DSP magic.
>>2955352I regret buying into the expensive meme radios. I like my TYT 390 more than anything. The only reason why I like my Yaesu FT3D is the ability to listen in on almost every frequency including AM broadcast radio (though no SSB or CW.) I can be on a trip, I can listen on the local repeaters, CB, and GMRS. >>2955408>truSDXIf the truSDX digital output did actually work (every one I tried didn't, even the digital mode nerd here tried) without something like digirig, then it would be great on-the-go for digital modes.
>>2955413Do you have any experience with chink dual band mobile rigs? I need a new 70cm/2m mobile for the shack. I hadn't considered any of the Chinese models because I assumed they were all baofeng quality and fraught with annoying quirks.
>>2955325
>>2955339I don't care if you eat ass. you don't want to do morse.
>>2955356The new radtel is also currently undergoing reverse engineering.https://github.com/JKI757/radtel-950-pro4x the cost of the UV-K5, but AT32 microcontroller makes it interesting.
>>2955421For mobile, just the TYT 9800. It's an "okay" radio, not baofeng bad, though. I have issues crossbanding 2m and 70cm, but if I do either of those with 6m, it works well. There's also some occassional.whirl sound when you are receiving that isn't the fan. It can be unlocked, but I cannot remember how it was done.I took it out of my vehicle and use it indoors now so I can transmit on CB as well.
>>2955437That's cool.Since that's apparently today's topic: I actually think custom firmwares and "mobile SDR" are the most interesting development in ham radio.Also: Smartphones are incredible pieces of shit with how locked down they are and how the whole ecosystem is effectively a duopoly. Android was a little bit open but that is about to change to with Googles new plans.I actually prefer "stagnation" and ham tech being outdated and using smaller dedicated chips over going a similar route.
>>2955284>>2955429nta but I'll biteExplain why you hate morse
icom makes such nice radios hardware-wise but the fact that D-Star is proprietary licensed bullshit ruins everything for everyone.We would have been able to do so many nice things if the big quality manufacturers hadn't been such jews about digital radio.
>>2955519Probably angry because he cant send code fast enough to attract the attention of a majestic Belorussian radio sport operator. 100 years ago, a guy like that would be tossed out of radio telegraphy school and sent back to the turnip farm.
>>2955494What was SDR like in the 90s and 2000s?
>>2955543nope. nice fan fiction though>>295554890's? are you serious? 2000's? want to move up a decade maybe?
>>2955437> radtel 950 proI didn't know this thing released.Ordered one to play around with. Looking at it's specs the thought of custom firmwares on a device like that gives me an erection.Gonna see if I can offer some help with the work.Shouldn't it be capable of supporting something like M17 too without any hardware mods?Meanwhile I noticed that f4hwn already has his firmware with every feature enabled running on an UV-K1. Nice!
>>2955552The first SDR system was made in the 1980s. The first consumer devices hit the market in the late 90s. Look up the SB1001 and WR‑1000i
Are sma connectors really that fragile?Should I always immediately put an adapter on an HT to improve the life expectancy?
>>2955601The only reason I put on an adapter is so it's easier to switch out antennas, or in the case of my vehicle, to put the antenna on my HT. BNC shines in this respect.
>>2955591Even after all this time the audio from basically every consumer grade SDR still lacks the warmth and soul of superhet. I think SDR is neat, but its like comparing LED to incandescent lighting. Led has so many benefits, but its just not as comfy. I wish consumer grade SDR and even DSP would see more advancements to make it sound less fatiguing.
Could someone give me a quick overview over digital ham stuff? It seems hard to get a proper overview.No idea whether I understood any of this right- D-Star (proprietary) full standard from icom, does voice but also other packet based things like messages and images- DMR, digital radio but not really sure where this starts and where it ends. No idea whether this is open.- TETRA, full digital standard mainly used by military, police and such in an encrypted manner. No idea about the license- APRS, send gps coordinates and text via radio- C4FM, digital voice on top of FM modulation- FT8, like C4FM but sitting ontop of SSB modulation instead- Fusion, Yaesu building more digital stuff ontop of C4FM?
>>2955674Also- M17: Newer fully open source digital standard for voice and text and aprs (compatible?)
>>2955673>Even after all this time the audio from basically every consumer grade SDR still lacks the warmth and soul of superhetAnon those aren't mutually exclusive. the RTL-SDR is a superhet. the HackRF is a synchrodyne radio. SDRs are pretty much exactly the same as a non-SDR in principle right up until you hit the ADC. You can control the SQNR pretty trivially by using noise shaping, well beyond the point that even very high end speakers can respond to. Although if you're complaining about warmth rather than SQNR distortion, it really just sounds like your sound setup is screwed. I'd recommend getting that fixed ASAP, maybe try not using garbage realtek sound chips, and EQ your headphones.
>>2955687SDR based radios sound less warm and have less soul than superhet radios. That's my opinion after using many different radios from the big 3. I suppose you must not have very sensitive hearing..... OM issues.
>>2955760Most SDRs are superheterodyne radios. You seem to have missed that part.
whats the best radio of all time?
>>2955760>SDR based radios sound less warm and have less soul than superhet radios
>>2955760I have a hallicrafter s-40a.Kenwood R-20004 SDR radios.you are full of shit. SDR mogs old radios in every aspect. Finding a signal, and tuning it in before the 80 year old dude stops talking takes tons of time on non SDR radios. Sound quality is irrelevant since SDR radios sound quality is dependent on what equipment is on your computer. I use shelf speakers for my speakers, and my amplifier is a sure 200Watt T-AMP AA-AB32971. but any amplifier I used in the past worked just great. My SDR can do FM stereo which none of my ham radios can, much less receive it.also your picking the sound quality is absurd since ham radio generally sounds like shit because of reception and atmospheric issues NOT the equipment.get good.I really no longer use my ham equipment as the SDR does everything, the only limit is software.
>>2956023he is right that a self-contained fully analogue has subtley different sound since newer radios are very "clean" and lack a lot of the analogue noise, but it's easy to get that back by running your audio through a dac and tube amp like any other digital audio.
>>2956032Fully analogue I agree, makes sense. You see the same effect in audio mixing/recording.But the distinction "SDR" seems a bit weird. Don't most modern radios still process the signals digitally anyway? Regardless of whether they use analogue signal modulation beforehand they still run it through a DSP before giving you the output, don't they?SDR and modern high end dedicated radios wouldn't differ categorically in that regard.
>>2956032I have lots of tube equipment. non digital stuff does not always sound better. sound quality is not something that is determined by whether something is analog or digital. you can have the best audio equipment in the world, but if your source audio is shit, or your speakers are shit then it's going to sound like shit. and I am not talking about audiofool shit like oxygen free copper, what flavor of capacitors, and other bullshit.>>2956036anything made since the 80's very likely does some kind of dsp.
>>2956036SDRs are literally normal radios. The stuff you'd normally do with dials and buttons is just offloaded to serial control. Some stuff like mixing, synchronous detection, etc. is also offloaded to software, depending on the radio.Modern ADCs and DSPs operate at such a high resolution that they're an order of magnitude more "responsive" than what any speaker architecture is physically capable of representing. The "problem" and why they can sound cold is usually because they're too clean. If you want analogue distortion you literally just run the audio out through some analogue hardware like a tube amp. That's it.>>2956050Oh absolutely. That "warmth" he's referring to is literally just distortion and noise. Digital is extremely clean. The problem is, some of that distortion is desirable for some people. I get it, but it's also a completely solved problem. Just have a proper audio setup to reintroduce the distortion if it's what you want. Simple as that.
>>2956023>Kenwood R-2000Nice. I was saving up for one of those when a guy at work mentioned he had his late-fathers SW radio stored under his bed and wanted to sell it. Turned out to be a near mint Icom R71A in its original box. He wanted $200 for it. I prefer Kenwood but this was priced right and it matched my R7000.
Lads, is there such a thing as an SDR that is self-contained? i.e, not a thing I have to attach to my PC and do a bunch of linux hacker crap to get going?Like, is there an SDR that you just connect a power supply and antenna to?I'm going for 'less frustrating linux shit', not more.
>>2956114if you're not a computer person, just get an icom or something i guess.the entire point of SDRs is the linux hacker crap basically.
>>2956114A SDR without "Linux hacker crap" will just look and work like a normal radio to you, just that it implements a part of its featureset in software rather than hardware (using dedicated chips).An example of what you ask would be the Xiegu G90.But as the other anon said: the Linux hacker stuff is the point of SDR because implementing hardware building blocks in software instead is what SDR is about. And either you create the ones you want yourself, which means programming, or someone has already implemented them, in which case you'll have to do Linux stuff get their solution(s) to run.
>>2956122>>2956159Fair enough.I guess that is a rather contradictory set of requirements.It's not that I'm against hacker crap, that can be fun in it's own right, I'm just hoping to have a clean separation between my radio gear and my computer gear.Iguess in this case that'll mean a dedicated sdr machine. A little sbc or a pi or something.
>>2956298> separation between my radio gear and my computer gear> SBC or piIn that case you might be interested in following the LinHT project from the m17 guys.They are developing a small SDR board that is supposed to go into a donor HT. It's pretty interesting.And while it will probably be most interesting for tinkering too (especially in the early stages) the way it is set up they are probably going to give some sensible defaults and simple on device settings to play around with.https://wiki.m17foundation.org/index.php?title=LinHT
what are you guys' recommendation for a budget (but durable) walkie-talkie?
>>2956352Do you intend to get a license?
>>2956352just get baofeng.
My license was yanked for “broadcasting” and for communicating wuth a north kkrean ham (illegal accirding to fcc fuck riley asshole hollingsworth)how do i get it back?
>>2956353I recomend against licensing, it just make it easier for them to prosecute you. The hobby is dead anyways there is virtually zero activity on 99% of the few repeaters left in CA fir example…
Does anyone know of a site that administers non-proctored GROL tests?I was reading that it was a thing a few years ago, but am not sure if that's a thing of the past.
>>2956114Modern rigs from Elecraft, Yaesu and Icom are self contained SDR systems where you don't normally get direct access to the computer inside.
>>2956389>I can't be bothered to operate legally therefore you shouldn't either so I can feel better about myself
>>2956389>it just make it easier for them to prosecute youunless you are a large business or corporation the FCC doesn't prosecute private citizens. there's a guy in my area who transmits on gmrs 15 while he does have a license he curses and rants and is basically a nuisance. he has been reported to the fcc about 10 times and they do nothing about him. since he doesn't interfere with public safety, military, aircraft and similar they don't care.
PSA:if you need an Apco 25 phase II scanner do not get a whistler scanner newer than the ws1040. the newer whistler scanners cannot deal with simulcast very well if at all. I have one, and my city uses simulcast, and are supposed to be phase II but aren't at this time.I had mine hooked up to a discone on my roof. the only way I could pick up the local FD reliably was when driving around town. I also use SDRTrunk and it has no problem on the same antenna.The main issue with the WS1088/ws1080/ws1095/ws1098/trx1/trx2 is that boot up takes 1.5 minutes. turning a bank on or off requires loading ALL the enabled banks over again. volume is controlled by buttons but squelch is controlled by a knob.The other issue is that in order to update even one setting using the ez-scan software requires turning the scanner off, waiting for the scanner to connect as a USB drive, then uploading the settings. this process fails 25% of the time.The last issue is that the ez-scan software is made for ants and the fonts are tiny. I think they did that to prevent you from screen capturing the radio reference libraries and running OCR software on it (you can still do it). You also can't cut and paste in to and out of certain parts of the software, and it just generally sucks ass.
>>2956506I used to have a PSR-500 and gave it to someone I know. I recently bought a pro-651 (same as psr-500), and programmed it using win500 (like my old psr-500), and holy shit I can receive my local FD more often than the ws1088.get a radio shack Pro-106, Pro-197, Pro-18, Pro-651, Pro-652, or GRE PSR-500, PSR-600 for P25 Phase 1for phase II get a GRE PSR-800Radio Shack Pro-18, Pro-668Uniden BCD325P2, BCD436HP, BCD536HP, BCD996P2, HomePatrol-2, SDS100, or SDS200
>>2956506>>2956511Thanks for the info. I'm still running a Pro-106 and a PSR-600 (my area is still phase I). I have a couple of pro-97s and a PRO-2055 that do nothing but collect dust.
>>2956388It's illegal to talk to people in the DPRK?Why do get the feeling I'm not hearing the whole story here?
>>2956555more likely he was one of the fags that frequent 7200 kHz and was caught jamming or playing music
>>2956558He did say "broadcasting", so I'm assuming that's what the FCC actually cares about.
>>2956346Very interesting anon, very interesting...
>>2956352The Family Radio Service in the US shares the same frequencies as GMRS, but is limited to 2 watts on certain frequencies, and 0.5 watts on others.Two watts is a LOT of juice, more than a lot of people realize.(it's technically illegal to modify the antenna on such a device, so lol don't do that wink wink)But in any case, 2 watts on a 462mhz thing can be... very cool.If you just want some licensed-by-not-being-a-dick type radio for short range (10 miles or so), then dude check out FRS.
>>2956568Pls no bully I was tired when I wrote that
>>2956594Nah man, you got the point across well enough.I copy.
Why is Elecraft so expensive what the fuck.Any alternatives for neat portable/small CWs?
>>2956596>Why is Elecraft so expensive what the fuck.Nobody knows. ANd they are no longer the best on the Sherwood Engineering table. The K4 ended up worse than K3 so they have a regression going. It didn't help their case that the were utterly tanked by the latest rigs from Yaesu.
>>2956603Sad to hear, they seem well built and well designed for what I am specifically looking for.But ~1500 beans hurts too much.
What's the advantage of those fat tip antennas?
>>2956555not a ham radio cultistbut technically it's illegal, or rather against fcc regulation, to speak on amateur bands or murs of frs/gmrs, cb anything with any country that isn't in an international radio treaty with the USAthis is more to protect international affairs than anything else. for instance in ukraine they did away with all civilian two way radio use during the war. so no more gmrs no ham bands no cb, and they dropped out of our treaty. so if a guy in ukraine is talking skip with you, you shouldn't talk back to him because it can get HIM in trouble with his own country which could in turn become an international affair where you a random retard american got this poor ukrainian guy in trouble on the ham radio and the fcc could be forced to write you a really meanly worded letterYou can try, nothing will probably happen, and if it does nothing will still probably happen>>2956388pics or it didn't happenare you british or american? if you were american there'd be an fcc enforcement filing about it and I would've read it by now
>>2956388ask the FCC
>>2956638antenna is shorter than the wavelength, top loaded is better than base loaded but not as good as center loaded.
>>2956744Is that really an adequate top load??
>>2956760No idea, maybe the chinks just wanted to make it look like the original one, or tactical or whatever
>try to make antenna>simple copper wire coaxial>1/2 wave then a loop then 3/4 wave>swr is garbage and it is 50mhz too high>can't tune it to the correct frequency it just goes further away no matter what the top length is>make a new one with 1/2w then two 3/4w>actually on frequency now but swr is 3>add three large ferrules to the coax>still ass>give up>try to modify an existing Chinese dipole>somehow make a perfect antenna for exactly 100mhz high>shitty anywayWhy is it so hard to just make something what the fuck. I literally follow exactly what should work and it doesn'tI'm going to try something that was you just cut coax up and alternate it or something but I'm sure it will also fuck up somehow and I will neck myself with it
>>2956388It is legal for hams to broadcast in my country so long as its within the guidelines.
>>2956830>>1/2 wave then a loop then 3/4 wavedo you have a schematic of that kind of antenna anon ?
Are there any good sites for finding and listening to HF? This summer I got a tecsun that can pick up HF, so I started going out at night with a wire antenna and would hunt down kino music stations that are definitely very legal. Now it's getting cold and it's not comfy anymore so I stopped. I can't do it from home because I live in an apartment with reinforced concrete floors and roof, and a lot of steel structural elements, I can barely pick up AM stations 10 miles away let alone any HF stuff.
>>2956918There are a lot of people and organizations providing online access to their Radio/SDR via web interface.See here for example: http://websdr.org/That what you are looking for?
>>2956928that'll do, thanks anon
>>2956929Enjoy, anon.Just a word of warning: be careful when playing around, some are very quick to hand out (temporary) IP bans if you play around with the knobs too much or too fast.
>>2956918The FAQ covers this:https://sizeof.cat/post/cyberpunk-faq/files/radio_FAQ_Preview15.htm#mozTocId701691
>>2956837no your country is license free.
>>2956962his country has licenses, there isn't a single country (that allows transmitting on ham bands at all) without licensing.you still need the license, there's just not a separate system and qualification for broadcasting.
>>2956970no country listed so no license required.
>>2957003Based offshore platform pirate broadcaster
>>2956918>hunt down <kid word> music stations that are definitely very legalFrequencies, please.
>>2957007>The pirate TV platform “REM Island“ positioned six miles off the Dutch coast in 1964. It broadcast the programming of TV Noordzee into millions of homes in the Netherlands for about six months before the platform was seized in an airborne operation by the Dutch military that ended the TV stations broadcastingInternational waters be damned, eh.>pirate TVThis is a new one for me, thanks for this i'll be reading up on it.
Finally decided to stop leeching my friends Icom-706 MkII and picked up a Ziegu G90.Hopefully it will notivate me more to study and license up and do something. There is a big state park by me, and I would like to build a giant rhombic for my first dxpedition/pota activation
>>2957031Ive heard a few in the 11-12mhz range at night. I remember one was playing free jazz.
When you guys hunt for stuff to listen in on how do you identify the modulation type of a random signal?Just monitor the waterfall and then try each mode at your disposal on it until you hit the right one?Or is there some strategy to it? At least digital/analog signal would be easy to differentiate I imagine.
>>2957072on HF hams use LSB for 40m bands and below, USB above, almost everything else uses USB, RTTY and morse can be easily identified when hearing it, CB is fun, you can have FM, AM and SSB so you try until something works
>>2957074So it's mostly that the way certain bands are used already narrows it down. That makes sense.But doesn't it become whacky with all the new fancy digital modes?Also does CW still sound like morse when received on e.g. FM/AM mode?
>>2957080>does CW still sound like morseCW is morse ?in FM it will not do much and in AM it will do some big cracks if I remember correctly but it will not do didi dada if that's what you mean.For digital modes, there are specific portions of ham bands for example FT8 is on 7075, 14075, etc. and you'll have a small waterfall so you can identify the signals but yes that might be difficult for less used modes.
>>2957088I see, thanks anon
>>2957072>When you guys hunt for stuff to listen in on how do you identify the modulation type of a random signal?This too is in the FAQ: >>2956948https://sizeof.cat/post/cyberpunk-faq/files/radio_FAQ_Preview15.htm#mozTocId701691>Just monitor the waterfall and then try each mode at your disposal on it until you hit the right one?The waterfall can tell you a lot and the FAQ lists specific tools for advanced decoding.>Or is there some strategy to it? At least digital/analog signal would be easy to differentiate I imagine.AM/USB/LSB/CW can be identified by the waterfall. CW can be analog or digital, especially CCW.
>>2957074>CB is fun, you can have FM, AM and SSB so you try until something worksit's dead though.
>>2953002you technically have too if you want to be legal
>>2957194I'm that anon, in hindsight I would never buy a dedicated murs radio now lolI've got two unlocked baofengs now that receives ~ 89mhz-460mhz as far as I've been able to see so far. murs is pretty active in my area and the terrorist radios transmit and receive a good 3 miles through hills and buildings in my city. I haven't tested them on flat ground with line of sight yet. But lots of truckers that come through town, and other just random redneck dudes talking to each other, are regularly on murs 5 in my town>>2957194It is against FCC regulations to transmit on a radio that is not part accepted for the radio frequency that you're transmitting on, which is not "exactly" the same thing as breaking a criminal law. If you go through the FCC enforcement database which is public. You won't find a single enforcement of that within the last 10, probably 20 years. The FCC doesn't care about people talking to each other in the woods, or talking to their family, on a legal free and license free band, without causing an interference of some kind. The FCC and nobody else for that matter will be able to tell you're talking on a non part type accepted device in the first place, if you don't tell them that yourself. Most murs radio handhelds suck ass, are expensive, and again can only transmit and receive murs which is objectively gayIn 2025 nobody should buy a murs radio
>>2957059Huh, interesting to know, I should scan that region more often. I'm not a jazz fan but I do like to dial around the AM band at night looking for rock stations that may skip in. A few minutes ago my interest piqued when I heard The Cult on 1490 kHz but it turned out to be an intermission for some talk show or "Coast-To-Coast" crap. Damn.I like tuning into Radio Nikkei 2 on 6115 kHz, they'll play a wide range of rock and some metal.
>>2957275>"Coast-To-Coast" crap. I wonder if Art Bell is cringing at how his show became nothing but conspiracy crap.
>>2957275> Radio Nikkei 2Is AM radio like FM in that it requires a wider band or can you listen to AM radio broadcast with any AM transreceiver as long as it can do the frequency?
>>29573203.5khz
>>2957318>On November 1, 2012, Bell updated his Facebook status with the following: "I wish my name was no longer associated with what Coast has become!"I don't blame him. I used to listen to his show off-and-on for about 2 years when it skipped in decently enough to listen to. But I stopped in '97 when he faked that "unknown agents took down his broadcast". It was getting flaky even then. I think it was his Ghost-to-Ghost halloween episode in '95 that I first heard him.>>2957320>can you listen to AM radio broadcast with any AM transreceiver as long as it can do the frequency?Yes.
>>2957495Art's giant double loop antenna was neat. He bought up one or two of his neighbors properties so he would have more room for the masts. Last time I checked the satellite photos it was still there.
Any guesses as to when the ULS will start running again?
radtel 950 pro arrived>set all 3 channels to 88.3mhz to see if I can pick up local radio (later found out there's a special submenu for this feature) >rapidly switches between all 3 channels pulling in random transmissions from god knows what band, but definitely not commercial broadcast stations>transmission indicator starts randomly going off on all 3 channels, despite not touching the thing and having explicitly disabled VOXso this is the power of chinese HTs
>>2957588If you have the equipment, or even a SDR dongle, it would be interesting to test for spurious emissions.
>>2957559I've been waiting for cores to open since the shutdown started and they still aren't openI just want to buy my licenses. The wife and I just use gmrs everyday on dead channels without a license until they open. It's their fault I can't follow regulations
I'm going deaf so I never followed my radio passion like I used to do I'm behind in stuff. How do you listen to like public signals like hi los and police scanners and stuffI always thought that was cool as a kid
>>2956760>>2956762From a technical standpoint, why does it look like it would not be?
>>2957685a couple wayssomeone else found the frequencies in your area already, and you just tune in with a radio that can receive on that frequency. Something like a cheap unlocked baofeng in the vfo mode could do that. But a lot of departments have long switched over to encryption which is a totally other topicIf you don't know the frequency you need to find to it. You can simply use the scan feature on a lot of 2 way radios and it will detect any rf transmissions within certain parameters and then tune you in automatically with privacy tone etc. If your radio is unable to do that feature, or the signal is outside of what most civilian 2 way radios receive, you can use an sdr. They typically have a much broader range than 2 way radios, are more accurate receiving wise, and the whole rf spectrum is displayed visually as a waterfall. You can view a certain band and at a glance see if theres any transmissions near you and how strong they are. Lots of sdr's have foxhunting apps built into them that you can geolocate the origin of the transmission. You can use some sdr's to track airplanes even unlisted government and military craft, to a degree.
>>2957683Yea, I have a pending vanity and some commercial stuff I've been waiting on.It almost seems like they spent unnecessary time shutting down access to the website, the databases, and automated tasks after 'the shut down' began.I can't help but get incompetence vibes on par with the ARRL.
>>2957701>If you don't know the frequency you need to find to it. You can simply use the scan feature on a lot of 2 way radios and it will detect any rf transmissions within certain parameters and then tune you in automatically with privacy tone etc.radio reference database exists
>>2957780while you're totally right and it's a good place to start, I've found a lot of businesses in my area haven't been updated in the database despite having changed frequencies.I've also found police frequencies that are unlistedThe many databases out there are a good place to start, but they aren't the end all be all.
>>2957789In my country, commercial radios have to be licensed and issued a frequency. The frequencies are public record on the govt database, so you can look up info by city, company name, etc. Its the easiest way to populate a scanner for commercial freqs. My local police switched over to encrypted p25 almost a decade ago now. I miss listening to them. All that's left here for unencrypted first responder traffic is ambulance and fire, and that's not usually very interesting.
>>2957701What kind of radio can I get where I can just listen to random frequenciesI have a shortwave but it never works
>>2957942Try a KiwiSDR accessible on the net for HF band, or get a RTL-SDR for VHF and higher bands. The first is free, the second is cheap.
>>2957559Govt reopened Wed night and still no ULS updates.
>>2958050Welcome to the ineptitude of the FCC: where it takes 5 years just to send an angry letter to a person jamming emergency frequencies telling them to stop doing illegal things.
>>2958050>>2958068It's happening! They killed https://www.fcc.gov/ on a Sunday.
>>2958086God I wish. At least severely limit the FCC.
>>2957761What is the ARRL even good for?The QSL card forwarding service might be cool, but a membership seems overpriced for just that.Does anyone even exchange qsl cards anymore?
>>2958140I do. I'll never use eQSL or that Logbook of the World. I signed up on eQSL in ''99 and last logged into it in 2004. I logged in 2 or 3 times in those years and interestingly I found a couple dozen qsl's for contacts I never made because I wasn't active during those 5 years. I remember sending an e-mail to a guy in the USA to double-check his logs as I wasn't active and he actually replied "it doesn't matter, just send me a card anyway!". lol. Probably a fraudulent award collector.>What is the ARRL even good for?I'm not sure. But my national organization expends a lot of effort in protecting designated spectrum and maintaining our presence with the regulating bodies both domestic and international. And I think they do a good job doing that. The QSL bureau is another reason I pay the $60/yr membership. A good value in my opinion.
>>2958140>membershipNothing for my worth. The only reason I paid for it was because the local ARES group required me to have it and take the emcomm classes offered. I no longer care about that stupid circle jerk so it's a dumb cost. I stopped my membership over a year ago and still get those "pls come back and support us :*(" letters. The last one was a month ago about le evil hoas and how I needed to give gibs so they can tell everyone to sign a template letter to send to congress about the hoa restriction bill that's been going on since forever.>QSL cardSome still do. I don't really care for it. However, I see the major appeal for it and why would still like to keep doing that. I imagine it's be really cool to show off all those sweet qsos in rare places.
>>2958167> I'm not sure. But my national organization expends a lot of effort in protecting designated spectrum and maintaining our presence with the regulating bodiesThis right here. I'm not from the US either but people need to realize that radio frequencies are very limited and something a lot of companies lust after. And without organizations doing proper lobbying for us there is a very real threat of ham bands being handed over to other entities. Especially given that our hobby is getting older and shrinking.
>>2956603Yaesu UX is still fucking dire though
>>2957942buy a portapack h4m and try not to break too many laws>>2958185turn down the nose slider and the ear sliderand you'll have a picture of every male in my immediate and extended family
>>2957986Will doI just wanna listen to weird airwaves and stuff I like that stuff
My baomeme headset adapter cable has a microphone in this little case with the PPT button, but there’s no holes for air to reach the electret capsule. Is this normal and it will sound fine enough for radio fidelity? Or should I drill some tiny holes in the case?The bulky doohickey plugged into the other end is a 10Ω/1000Ω attenuating divider I potted in resin for my IEMs because 8Vpk-pk is not fun to listen to. Also it adapts a TRRS socket to a TRS plug with L and R channels shorted together, as well as the mic/gnd pins shorted together, to ensure that any IEMs will be fine. There was a slight DC bias on the jack too, but I decided fitting a ~100Ω @20Hz capacitor would be too bulky. A bipolar electrolytic might fit, but I don’t like the idea of embedding one of those in epoxy. And big X7R/X5R MLCCs would distort horribly from their voltage dependence.
>>2958700Oh but man each time I push a button I get a tiny little speaker pop, I might want some sort of filter after all. Considering there’s a power rail for the mic, I can probably shove a multipole active filter with a tiny op-amp IC in there. In which case I’d probably do all of that in the microphone enclosure, divider included. Maybe make my own from scratch.I do not want something fatiguing for my ears.
>>2958185>>2958634I had a genuine laugh back when that picture first made the rounds and people were like "no that is not his actual name this is just a hatecrime edit made by antisemitists".And then it turned out his name is "Shlomo Vile" and all they did for the edit was flip the order.
>look for house>one of the first thoughts are where to put antennas and what kind of antenna I should make for the siteI should never have went down this rabbit hole. One I just looked at would make a good site for a fan dipole with even a 160m element.
>>2958912Based. Indulge. You've earned it.Also while you're at it why not add some solar panels to make your setup resilient.
Just found out that the HackRF et al are allowed to be sold in the US despite being able to TX on restricted frequencies mostly because of a legal loophole. Effectively, all you have to do is market your radio as "test equipment" or "development equipment" and it can do whatever. It's like the radio equivalent of "nutritional supplements" in the workout space.The real question is, how long do you think this golden age will last? At some point some pearl clutching NGO (backed by telnet corpos or a LEO front) will lobby the fuck out of congress to make it a lot harder to get this stuff. Frankly, I'm surprised it's so easy to get a high quality VHF transmitter capable of broadcasting on commercial broadcast frequencies. I won't be surprised if we live to see a future where radios end up like chemistry glassware: Manufacturers require proof of licensure to buy "sensitive" equipment. If anything, I'm surprised it hasn't already happened.
>>2959025Yes, Hack RF is probably most useful as a testing/diagnostic.It’s a low power device, so it’s allowed, not because of some label they stuck on it.> tx restricted freqYeah? My old boy’s science experiments books from the 30’s to 60’s have plans for all kinds of shit running at all kinds of frequencies including marconi broad-spectrum spark-gap transmitters.I think some governments, in a fit of ignorance, have probably banned hack rf, and definitely the flipper, even without issues.Kind of like green lasers… it only served to bring about attention to it and attract miscreants who watch the news of them being banned and say to themselves “I’ve never thought along those lines before, I need to get me some of those before there is a total ban” and sales goes *up* upon banning them.
>>2959058>It’s a low power device, so it’s allowed, not because of some label they stuck on it.I mean, is that really a meaningful measure? Just run it through a pre-amp, then a bigger amp. The absolute crap harmonics of these super wideband SDRs are more of a barrier than the power output.
>>2959025>At some point some pearl clutching NGO (backed by telnet corpos or a LEO front) will lobby the fuck out of congress to make it a lot harder to get this stuff.Nah, unlicensed retards will flaunt the rules in a cavalier manner until it becomes a problem, and then they get banned.
>>2959025It worked so well when the US Congress passed laws to keep drugs out of the US, of course nobody will ever get illegal radio equipment in either
>>2959140That's exactly what I'm saying. But no way are they going to stop telcoms from having them, for obvious reasons.>>2959156I'm certain at this point nobody is more politically nihilistic than Congress. I have never seen one iota of care put towards the quality of their legislation, viability of approach, or anything like that. More people in prison? That's free labor. Prisonmaxing is bad, but maybe it's not that bad if a few extra people fall in. That'd be about the extent they'd consider the consequences.
Can any of you guys sign into cores? I was gonna check some stuff but every time I try to log in it tells me "Error occurred in CORES System. Please Contact the FCC CORES maintenance."I waited 50 days for the bastards to open and I still can't look at the damn website lol
why wont this stupid thing WORK
>>2959418You dumb fucker
>>2959392yoooooooooooooemail came in this morningmy licenses have been approved!time to hop on the local gmrs net!
>>2959418
Fellas, I have a power supply that is NOISY as fuck.I plug the radio into it and it washes out the weaker signals.What do I do to stifle this damn thing?Is there some kind of 'smoothing circuit' I can put between the PSU and the radio?
>>2959495Go you anon.GMRS is pretty damn cool.
>>2959606No. Scrap it, find a better, quality power supply.
>>2959629No c'mon I can't just stick a condensor in there?
Okay, so heres what were going to dooI'm going to take some 2mm solid wire, and I'm going to make a half wave dipole.
>>2959633Make it for the 160m band (approx 250ft total.)
>>2959606If you have a scope you can examine the noise. Filters or ferrites may well help you, but it may well not be worth it. You could make your own linear transformer supply if you want something definitely low-noise.A big capacitor might draw too much inrush current when the supply turns on, and a CLC filter might cause inductive spiking if the power load is ever sharply intermittent (e.g. pushing and releasing the PTT button). If you have the voltage headroom and it’s audio-frequency noise then a capacitance multiplier should work wonders, but that 0.7V dropout isn’t always acceptable.
10
>>2959633How do yagis work
>>2959719Reflections anon. gain at the cost of omnidirectional.
>>2959719google also 6
>>2959719Tl;dr, the driven element radiates, and the passive elements absorb and re-radiate.The physical configuration makes it such that the reradiated signals combine in one direction, thus giving directional gain.
>>2952430I figured this might be the best place to askI'm buying a place about 5-miles out of town and given there is no Fiber or Coax out in the area I want to go with 5G wireless internet using an outdoor antenna if needed. What do you guys recommend for antennas? I'm told directional is a pain in the ass and "semi-directional" is better. The place I'm buying already has a mast that comes up out of the ground and runs up along the side of the building. I'd say it's roughly 3 foot taller than the ridge of the roof line. My plan is to just mount a MiMo or something to the pole below the existing TV aerial. Advice on mounting is also appreciated.
>>2959665Hmm, I think I could live with 0.7v.
>>2959719
Has anyone made an antenna launcher?I'm thinking of reusing a fire extengisher with a 2.5" barrel and load it with a tennis ball.>pic related.I started off with the commercial CSV19 Antenna Launcher, but didn't like the idea of the long-term durability of pressurized PVC
>>2959877>commercial CSV19 Antenna Launcher
>>2959877Just make something that can use revolver blanks.No point in dicking around with gases and pressure tanks.
>>2959877>but didn't like the idea of the long-term durability of pressurized PVCDon't ever live in a house then
>>2959877>antenna launcher
>>2959877Naw. We use a bow and arrow. But one year a guy used a potatoe cannon with mixed results.
>>2959877Whatever happened to sling shots and arborers weight?
