You guys have got to try FT8!!!!!!! You will definitely get answers there. Then learn how to do JS8 which is conversational This rig is perfect for it

#bitx40

It’s a two layer board (top and bottom), I’ll send the dimensions later on, screen printed, and just take the default settings for pretty much everything else. You’re only putting about $25 at risk. (

I don’t know the answer, but it would seem fairly simple to create a little timer inside the code that (once the key has been closed ) would keep it in transmit mode for a variable length of time, but

Thanks!

​​Yes -- i've done the FT-817 bit for frequency control but always just did the signalink-type PTT. I have not yet done any of the KD8CEC firmware. the easy digi should work FINE -- but it lacks the v

Homebrew sound-card isolator matched to my uBitx today -- ran into unexpected problem: begin transmission and instead of a solid TX, the push-to-talk chattered in and out of TX / RX / TX / RX about 5

It’s on git hub, I will have to look around to find where I left it.

Yes kees— finally got a chance to test it on real equipment. Confirmed what I had found with the S meter measurements and then some

I was able to make measurements on the 20 meter version 3 uBitx harmonics, using the daughterboard relay system, even with 1 section of the filter missing due to damage i caused when installing it. Th

I finally sat down to do some more work on my uBitx -- with the external relay daughterboard -- wired with just regular, unshielded wire. I recall that I damaged and lost one section of one of the low

If you actually start doing that and having deployed units responding to JS8, you could easily create a nationwide or worldwide AUTO net, providing low power, very inexpensive message relaying. JS8 au

Since I have a tiny bit of time on my hands this week, I’m going to finish out another soundcard & Isolator to go on my uBitx. I have never put it on the spectrum analyzer to see how the relays did, a

Perhaps you could post a photo to show what is missing and what you think is wrong?

That would be great! Gordon

In the last few days, I’ve learned how to do FT8 and probably JS8call as well. I’ve been so busy teaching emergency communications that I haven’t been able to fiddle with my radios much, but that look

Interesting. Thanks for forwarding the link. i ran the default look (which is of reasonable size) and it was a small db down at 20 meters and 20 db down at 80 meters.... ​ A ton of the people I work w

Hmmmm. I didn’t see any math to explain the quoted efficiencies of 40 or 90%......??

I hope I am correct here: The advantage of HF receive is that the galactic and lightning noise is 20 DB at times above the thermal noise limit. In other words there is enormous amount of signal compar

First off, do the daughterboard relay trick to help with the existing low pass filters. Then consider adding individual bandpass filters (they make them for contesters and there are design papers on t

I’m sorry to hear that.