Just in case anyone stumbles over this.? I recently had to replace the QCX Atmega chip; this after bricking the original.? I've since learned how to update the chips properly. Initially I thought that audio crackle had been solved with the new chip and firmware, but it has not.
The audio crackle is like hearing lightening strikes while listening to HF DX. I can hear CW and WSPR tones but, really, the crackle is so harsh it makes using the 30 metre QCX? unpleasant.
So, I';m open for suggestions as to how to resolve the issue.
I'm using a 12 volt, fully charged battery, to drive the radio.
Thanks
Barry
