Received big radiator, but…
Something went wrong while transporting.
Метка: amplifiers
Test amplifier with mrf9120
Just received a few mrf9180 and one mrf9120, decided to finally test it with mrf9120.
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).
Last (i hope) holes in the plate drilled.
Dead mrf9180 inside
I was doing some measurements and accidentally disconnected supply power with connected power input from driver. So gates got more than negative 0.5v and right gate has died.
Drilling holes in a coper is a pain.
And bigger pain is to cut the thread in it.
MRF9180 amplifier — feeding transistor via balancing choke
Let’s try to add balancing choke to the schematics — feed sources from 4 turn choke for each transistor (8 turns summary) with power connected to the central point.
MRF9180 HF amplifier, BFG591 as driver.
BFG591 as driver.
MRF9180 HF amplifier.
Based on mr9120 aliexpress kit.
Stuff arrived
Plate for mrfx1k80, PTT sequencer and SWR bridge.