Hi Bill:
I had refrained from any postings of my work because the "purity" of my build may be called into question and I didn't want to create further distractions from your efforts. HIHI. If you scroll down this page you'll get an idea of what I've been up to: https://github.com/brucemack/
kc1fsz-tjdcr. I also see that you've switched away from the Schottky diodes which I have not done, so I'll make that change to see how it impacts performance.
Moving fully into the realm of unauthorized deviations, I've been experimenting with the simple "frequency offset" feature shown in SSDRA on page 218. Hanging that simple circuit from the high side of C2 seems to provide the hook needed for a simple companion CW transmitter module. Joking aside, I'd never built an analog VFO before the TJDRC project, nor did I ever learn CW, so it's been quite interesting to try to create a sister board that stays true to the TJDCR ethos but can still make legit contacts.
Thanks for all the work you guys are doing to educate the rest of us,
Bruce KC1FSZ
Dean and Bill:What you guys have done with this project is truly amazing. I didn't build the rig in the "original wave," but I recently made one just for fun. I finally got around to looking at your Discord this weekend and was completely amazed... And Dean's tutorial videos are surely headed for YouTube platinum status!
Congrats and 73s,
Bruce MacKinnon KC1FSZ, Wellesley, MA
Bruce: There are several builders on Discord who would be very interested in your CW transmitter module.
Thanks Bruce! Congratulations! 73 Bill Hi7/N2CQR
That is one beautiful layout, Bruce. Well done, impressive use of KiCad on github. But, be careful, Young Grasshopper (re:Kung Fu). You will anger the gods of CQR and DAS should you place that masterpiece into a metal enclosure. You shall not covet thy neighbor's Si5351! Any further modification will provoke the all-powerful gods.
ReplyDeleteReports of our Troglodytic intransigence have been greatly exaggerated. Bruce has nothing to fear. 73 Bill Hi7/N2CQR
ReplyDeleteShhh...don't tell anyone about the Vienna Wireless Society all surface mount, manufactured PCB, SDR receiver. They might discover my secret life.
ReplyDeleteWe heard about that sinister SDR receiver plot Dean. Rumors say that it contains 4 million transistors and sends packets of data to the Sagittarius Dwarf Elliptical Galaxy.
DeleteAre these the real or some Deep Fake CQR and DAS?? Hard to tell in this age of AI. Dare not anger the Soldersmoke gods or they shall administer the feared Wouff Hong!
DeleteGreat work Bruce! It sounds and looks great! The PTO and battery holder really brings the aesthetics home! :)
ReplyDeleteI think having the KiCAD files on GitHub is really a great idea. This is why I am trying to learn https://ece.uwaterloo.ca/~aplevich/Circuit_macros/. Having the schematic as code and the version control of GitHub allows builders to see how the circuit design evolved.
If we can get that working like literate programming (Knuth), we can combine the schematic code with circuit explanations and it will make a beautiful document with schematic for future builders.
The Radio Gods are not happy. This manufactured board is the first step towards appliance operation. I hope bruce has a good lightning arrestor in his shack.
ReplyDelete