Il giorno 09 gen 2020, alle ore 11:53, Alan G4ZFQ <alan4alan@...> ha scritto:

I agree, however Vern wrote he had to replace C17 in both his faulty QCXs… it could be a coincidence, but what are the odds of that?

One could ask why no-one else has reported that problem?

That’s true Alan, I’m not even trying to draw conclusions based on a sound statistical basis. However, I found it interesting that Vern found exactly the same faulty component on two QCXs and I was wondering if that could help me fixing mine.

I wonder what would happen if it were faulty, open or short circuit, what would be the symptoms? I'm not an expert but I think either way all that would happen is that the filter would not be so effective.

In my case I can barely hear signals which in reality are pretty strong, and that’s with maxed-out gain… and a quiet room HI!
I did A-B comparisons with another radio and the same antenna, I’d say signals are down a good 30+ dB. On the other hand, alignment tones are loud and clear.

My QCX was working perfectly before, only recently has developed this fault, plus the microcontroller isn’t starting anymore when first powered on (cold boot). I’m really puzzled!
--
73 de Andrea IZ1IVA - cq at iz1iva . net - http://iz1iva.net



--
-- 73 de Andrea IZ1IVA - cq at iz1iva . net - http://iz1iva.net