[RFI] Wideband 80m Noise

[Ed Richardson]

I have been plagued with a wideband 
noise at my QTH for quite some time. It basically covers the 1.8 to 4.5 MHz band 
with noise with the a noise peak around 3.6 MHz. However it appears to have 
changed recently and spectrally it is noise with very sharp nulls every 5 kHz. 
Spectrally it looks like CDMA signals with a 2.5KHz code rate parked right next 
to each other. I have removed power from my home and the noise persists so it is 
something in the neighborhood. 


The noise does get turned off at 
times usually early in the morning, but this is not consistent. It makes me 
think it may be a TV or light but does anyone have a spectrogram of plasma TV 
noise? As soon as it warms up above freezing outside, I will go searching with a 
portable radio..

Anyone with ideas or 
suggestions?
Ed 
VE4EAR