开云体育

Had some good contacts with my 80m QCX CW TRX but having saved a message I cannot find how to send it. There must be an easy solution ? Roger Taylor G4CGU .

Oh ! Thank you. I thought we were just being short-changed on the 73’s for some reason. ;-) S. Sent from an electronic device.

72 is a 73 sign-off from a QRP operator. Jack, W8TEE

Excuse my ignorance... what is 72 ? Stephen VE6SVJ Sent from an electronic device.

Just wondering...? This now reminds me of the progression that occurred with my freq-control apps ( see attached ) for the Small Wonder Labs DSW-II-series rigs back around the turn of the millennium.

Thanks to John, KM0I in Mississippi for my first 30m CW QSO using the QCX-17 to the downspout, freq-controlled by the app, My_encoder_de_N4QA. OK, think I'll stop while I'm ahead... 72 / 73, Bill,

Hi, As promised... I got a fishing pole and weight and put the fishing line over the top of the oak tree outside my radio room. I used it to pull up around about 130 feet of paracord. And - as

This is something I have been messing about with in support of a balloon project that a local club is working on. A lot of copy, paste, modify from a variety of other's work Some have asked for copies

The original QCX used 10uF capacitors. Someone in an earlier thread showed that these were the cause of key clicks (to be correct, they were passing the clicks caused by the offset on the sidetone

On the earlier kits, 0.1 uF works fine. On the Rev 4, it needs to be higher. If you use 0.1 uF on a rev 4 board you will get very little audio. Just my 2? and experience with it. 72, Charles - NK8O

PCB revision 4 on Hans' QRP Labs page states that they have been replaces with 1 uf ceramic.... you have gone with .1 uf ceramic. Any real difference?... I have not done this YET... but I did point

Mike, The first question is what revision of the board do you have? If it is 1-3 you need to replace the electrolytics C21 & C22 with 0.1 uF ceramic caps. That has worked on 5 radios I have built 72,

Try some freezer spray or a wooden cocktail stick to carefully prod connections.

Hans, Probably not. This sort of thing does have to be adjusted and interfaced to a particular radio. I could not build a stable VFO so used one of the PA0KSB design in a converted Decca Voyager,

Henning, this s something which deserves a photo! or two. It is a fascinating bit of history actually this whole huff'n'puff subject. Hans himself did something very unorthadox but cool, in using a

I agree, but I’ve checked it and checked it. I guess I’ll give it another once over.

Hi Rob Just looked at the Bamatech case and it looks like there is loads of room around the headphone connector, so guess that's not the problem, coincidentally the case is almost the same as the one

Rob, Seems obvious, although not obvious. Must be a bad connection, solder joint, fragment of wire/solder, something shorting together or on the metal? case.. 73 Alan G4ZFQ

Hi Rob Well my problem was that I got a crackle/scrathcy noise in the headphones as I pressed a button turned a knob or moved the antennae cable at the BNC socket. I never had it go deaf though. I

All,the second Version Arv mentioned reminds me to my Version which I build in 1972/1973? together with a frind of mine using TTL chips: a frequency counter using 7490 Chips + 7575 latches connected