[TowerTalk] Noise puzzle (longish)

[David Gilbert]

I'll try to keep this reply brief in order not to offend Bill Marx, 
whoever he is.

Higher common mode pickup due to more tower/coax in the air wouldn't be 
directional, so I doubt that would be it.  Since ground waves attenuate 
very quickly as a function of distance, the additional height might 
cause the difference you see to a noise source a few km away if (as you 
state in your next message) it isn't sun noise.

73,
Dave   AB7E



On 12/8/2010 8:05 AM, Pete F5VNB wrote:
>
> I am puzzled; is the noise now lower because the main lobe is now more
> elevated and the source is close to the horizon, ie it *is* a long way
> off. Or could it be something common mode that appears when there is
> more feeder/tower in the air?
>
> What does the team think?
>
> Pete, F5VNB
>
>