Rasmus SA5RJS on Nostr: Tried a thing that has been on my to-do list for ages: listening to the signal that ...

Tried a thing that has been on my to-do list for ages: listening to the signal that the BITX40 puts out! Here I transmitted into a dummy load and let the QMX pick up the RF using a small wire.

Here's an audio recording: https://raek.se/dump/bitx40_audio_test.mp3

A good thing is that the BITX40 both has a trimpot for the IRF510 bias *and* for pre-driver gain. That way I should be able to transmit at power levels below 7 watts too. The MINIPA70 power amp I'm building can't handle 7 watts on it's input, IIRC, so it's great that I can turn it down a bit.

#AmateurRadio #HamRadio