On Sun, Jun 9, 2024 at 06:52 AM, Spencer WD4AWD wrote:
D513, which from what I can discern, helps select the 15/17 band LPFs.? Instead of seeing something close to my supply voltage when any of the lower 4 bands were selected, I was seeing ~0.5V consistently in receive mode
Hello Spencer,
please check the direction of D513 and additional all the diodes. In some hours I have more time and will send some more information. You may also check the QRP Labs Wiki. There is a document about the PIN switching of the LPF section.
73 Ludwig
