RF-Head wrote: ↑Thu Dec 11, 2025 10:16 pm
Suono from Italy use MRF300 AN and BN mosfets in there transmitters.
They run a single MRF300 on 250W and a double on 500W and it's runs cool for 24/7 dat in and out.
I have some MRF300 transmitters running also 24/7 and no problem
But overdrive or mismatch on the Gate will be a problem and will blow your MRF (never overdrive more then 1dB)
According to the service manual the low power transmitter lines 50-100W all use MRF300 AN but with 24v instead of 48v. I had some on my workbench but I didn't inspect the output stages. I will definitely take a closer look at it when it is on my desk again.
