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Hello. I am working on an ATtiny power / SWR meter, basically a smarter replacement of the famous Tayloe SWR bridge. It will be a 1W to 5W (maybe a bit higher, up to 10W) QRP resistive bridge with 6

It is up to US$168 now and includes the Rutledge book with it. Needless to say, the book goes for US$60 or so on Amazon so it's a decent price overall. -- William, K6WHP "Cheer up, things could get

Chuck: I, too, have benefited from your postings and videos, especially on Muppet construction and the 1W-5W assembly manuals. It's too bad that every kit doesn't use the build-and-test paradigm. I

Unique chance to grab unassembled genuine kit on eBay:

Hi Chuck, Thanks for the heads-up. I bookmarked your site and then downloaded several things of interest to me. I will look in from time to time to see what you have on there. There is a Swedish ham

Good stuff and TU Chuck. Paul, W8AEF

Thank you Alan! 73 Dave, NI9M Silvis, IL

Dave, Go to youtube and search for k7qo or try this link: https://www.youtube.com/channel/UC7CSitIbrMxj6jIldSWjJQg/videos Alan, N8WQ

Raspberry Pi 4 Course by K7QO: Start here: https://www.youtube.com/watch?v=VB-Q8CRDPjM Regards, Ken, KM4NFQ "Not Fully Qualified" https://github.com/muurtikaar/mega-morse-tutor

Greetings, I would like to point out two CW Ham Radio packages that can be installed on a Raspberry Pi: ebook2cw and morse. Source:

Alan/Chuck, I would be interested in following a Rasp Pi Course. Can someone tell me how? Thanks 73 Dave, NI9M

Chuck, Just wanted to let you know how much I enjoy following along with your Raspberry Pi 4 Course. I especially like your pieces of history you are throwing in about C, Fortran, VAX computer, etc.

I have heard that those large (1TB+) Solid State drives don't last very long? That is why I make backups on DVDs. I wrote a small shell script that tells me how big the current working directory is,

The problem was not with the code course. It was with the Morse code books.... thanks,

Thanks Chuck. I think you know that the Amateur community greatly appreciates your lifetime of excellent contributions to our collective knowledge. I am personally grateful for the learning assets

Hi Chuck, There are a couple of backups? of your site on the "wayback machine" from this year that might help you as well as 20 other copies going back to 2012. Cheers, Will ZL1TAO

Gang, I lost my 1TB SSD drive this last week and I have been hunkered down trying to restore everything to its original state as best I can. Because of the Raspberry Pi 4 project I had not been doing

Looking for more gain for use with SA612/LM386 receivers, I found this version by JF1OZL. * Emacs! Bread-boarded it and did some basic measurements with the feedback resistor Rf at 10 Ohms With a

Yes, both measurements are peak-to-peak voltages. Thank you very much Nick for the great explanation. It's the internal 50 ohm resistance from the power source (function generator) that I was missing.

Well, it can be in any units if kept consistent. I think it said pp in one instance and didn’t specify in the other. So I figured we were staying with p-p. I do normally think though, that when