.....Reminde me to buy a ready made bandpass filter next time.... or to make a classic pcb....
I am in the process of soldering the bandpass filter for the hf radio but it's taking some time since there are a lot of connections and a lot of glue to put up, times 9 bands...
Maybe I can finish it today...
.... done... only the connection from each filter output to the relay is not done. 160m band has no control at the moment... for some strange reason ethernet cables only have 8 conductors ;-)
Design is from the GQRP club and the control circuit is my design. Honestly a simple transistor (bc547) as a relay switch.
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