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?
