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Gang, The VOX circuit is very simple one like this: https://www.electroschematics.com/354/vox-circuit-schematic/ I changed 47k to 10k to shorten the hold time. Here is how I modified my radio

Very nicely done Adam! ?? There's nothing more satisfying than completing QSO's using a transceiver you built. ?Especially so for one built from scratch. 73, John AA7US

Gang, I built this transceiver last weekend. It is a VOX controlled simple DSB transceiver for 14.074 MHz using crystal. It puts 500 mW and the QSO test with my TS-590S seems promising. See the

Thanks Adam and Merry Christmas ! Jim

Jim, It depends on the load capacitor of the crystal and the mode. The normal load cap is 20 pF, and if you want to receive SSB, you will need to pick two caps to oscillate on the exact marked

What value are the two caps at pins 6 & 7? Jim WB4ILP

Gang, Merry Christmas! I visited Windcamp studio last weekend. The owner makes nice looking antennas and battery packs as well as accessories for FT817/818 and KX3. His studio is much bigger than

Ken, The domestic price is higher than 300 bucks. The eBay seller cannot have lower price than that. Thanks, Adam

Rob, If your problem is a common problem, the designer might have some clues. Thanks, Adam

Thanks Rob, you probably just save me $. Seller refused my offer of $300 for KN990 which what I deem it to be worth. Ken ke4rg

Adam,? Great video, superior than a?detailed paper instruction. Any beginner can made by himself. Dozen of builders are making this simple receiver in Japan. Easier than the MRX-40, QST magazine

I bought a KN850 and it has serious problems I can not fix. I figured one day I would find the right ham electrical engineer that would want to play with it... document it.. and fix it. For now.... I

Gang, BA6BF did it again. You can read about his latest flagship radio design from: https://forums.qrz.com/index.php?threads/a-new-transceiver-kn990-made-by-ba6bf.626316/ If you wish to buy one, you

See this video: Build a Simple RX <https://www.youtube.com/watch?v=Spw96fqNyJU&t=38s> Schematic: Thanks, Adam

Folks, CS-series, Sandwich digital VFO and Choc perfboard are sold out. Likely I will not continue these kits and parts. If you still need these, please contact my distributors. Other kits are still

Hi. Bob I have a CRK10-A (for 40 meters) that I made 150+ QSO’s on. I haven’t used it much in the past year or so because I got into building radios and now have a dozen pieces of QRP gear (I like

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Hi Gary your the only one that responded. Can you give me a price or maybe a trade? I have the SSB rug and it was built by Larry. Let me know and thanks for responding 73 Bob AF2DX

Hi, Bob Are you talking about the CRK10-A radio? I have one I’m not using much and a bunch of crystals. Let me know if no one else has what you’re looking for. 72 de Gary W0ITT (ex – WA0ZSU)

Hi gang, while being sick last year much of my ham gear was taken. I really miss the small 3 watt rock bound rig since I had lots of fun with it. if anyone has one collecting dust please let me know