Niels MoseleyThe respin of my uBitx front board fits -- this time with the main board connector the right way around ... there is still a lot to do in terms of software development #hamradio #homebrewradio
After waiting more than 2 weeks for my JLCPCB order, I found I ordered the wrong package 74ACT541 and got the 20pin uBitx motherboard connector reversed on my PCB. #HomebrewRadio #HamRadio
After more than 10 years gathering dust, I finally built my Softrock RX II. Now I have to get it going under Linux.. #HomebrewRadio #HamRadio #Electronics
Tog HackerspaceA nice bit of homebrew radio testing in the space last night.
Daniel EI8ICB was trying out a home-made 4m antenna and made a QSO with EI3IXB, David Gardiner from South Dublin Radio Club.
Always great to see something built by hand getting on air.
Niels PA1DSP
PicoSDR Preview
Alan GarfieldAnother day, another SDR post. Following my "series" of STM32G431 with embassy posts so far it now has a PWM controlled analogue s-meter display!
STM32G431 SDR - Now with analog S-meter.
Successfully integrated an S-meter into the STM32G431 SDR project. Really happy with the results so far. The next phase will be developing the transmit functionality.
STM32G431 SDR - Now with an even better s-meter!
I repaired a friend's QMX+ transceiver today.
A the BS170 mosfets in the PA were fried along with the driver, an 74ACT08. In addition the PA VCC modulator mosfet was also toast.
The BS170s were quite difficult to remove as their sources are connected to the PCB ground plane which turns out to have an amazing capacity for absorbing heat. Even my 140W desoldering gun had trouble. The PCB held up though -- no lifted traces, which is excellent.
Time to remove the flux!
#hamradio #homebrewradio
And this is the second part of my embassy-rs Rust SDR transceiver project. Now with working SSB filtering. It's using a 14 pole differential all pass phasing network for modulation (tba) and demodulation. It works pretty well I think. I really am liking embassy-rs.
STM32G431 SDR now with Upper and Lower Sideband
This is a video of my STM32G431 based SDR transceiver. Previously a fully working radio I built with the firmware written in C++. I was never really happy with the interface, and I got bored with C++. So I took up the challenge of a redo of the firmware in Rust using async embassy-rs and a new control interface (in this case running a RPi Pico also running Rust). This is its first step as a working receiver. #hamradio #homebrewradio
