11-07-2017, 03:28 PM
Fixed my issue...
For some reason the Pi didn't allow the soundcards left channel to operate, only right. I changed to a stereo plug with the right channel as my audio input.
There is still some inherent noise, so I switched off the radio and turned the volume down in WSPR-X until the reading was 0dB. I then switched the radio back on and adjusted the slider up to 30dB. It's been working fine and decoding stations on 10m over the weekend.
For some reason the Pi didn't allow the soundcards left channel to operate, only right. I changed to a stereo plug with the right channel as my audio input.
There is still some inherent noise, so I switched off the radio and turned the volume down in WSPR-X until the reading was 0dB. I then switched the radio back on and adjusted the slider up to 30dB. It's been working fine and decoding stations on 10m over the weekend.