we have to investigate why the noise suddenly drops around 7 a.m., but not always ... ? I presumed the cause was the street lights, but the timing is different. I agree that this effect appears to be
The 'C' was very clear indeed - see the small JPEG attached. Switching off the AGC in Argo and reducing the Rx gain proved very useful as I could see the noise level changing and had no 'holes' in th