¿ªÔÆÌåÓý

ctrl + shift + ? for shortcuts
© 2025 Groups.io

Re: QCX 7mhz Output Filter


 



Here is the FFT image. I've also put an image with no signal, to give an idea of the noise floor.
The signal looks pretty clean to me. It's just that I'm not getting the power peak where I want it, i.e.7.030mhz.
Next step is to try what Daniel suggested? Another test worth trying is to put the load before the LPF (disconnected) to see which frequency has the highest output, adjust L4.
But I think I'll get on the air for an hour or two first, as it works fine and it's a lot of fun as it is!
73s
Julian
G4ETS

Join [email protected] to automatically receive all group messages.