Preamp for mrfx1k80
Just to make sure that it’s working. It has around 0.4watt clean output. Should be a little more, will check transformer between
Метка: amplifiers
mrfx1k80 first run
First test run of the big amp.
Big amp. work
Thermal paste and a bit polishing.
Some big amp. work
Started assembling LPF: Bottom: Top: Received screws. Before final assembling I will polish this stuff. I’m still waiting for «PTM7950 Phase-change Pad»,
Continue working on SDR Box
Just photos: Arduino nano to convert BCD (Binary-coded decimal) codes for LPF to codes for BPF (they have different encoding for bands,
Packages — fans arrived
48v fans for amplifier.
5w HF amplifier
It’s for using TRX-DUO as signal generator. I remember that I have old kit with IRF510. I bought it as assembled in
Received big radiator, but…
Something went wrong while transporting. I still can use it, but it’s not cool. I spent 30$ for radiator and 30$ for
Test amplifier with mrf9120
Just received a few mrf9180 and one mrf9120, decided to finally test it with mrf9120. Looks like i need to fully rebuild
Concept of the box has changed :)
Now i think it’s better to insert all filters in box and not to insert TRX-DUO (or another SDR).