[TowerTalk] Antenna Separation to eliminate Computer RFI

[Pat Barthelow]

Folks,

I am helping a local university  bring up an HF station equipped with 
Winlink Modems and softare to use as a medium for teaching computer 
networking and security.   The station antenna  is set up in the main 
student and classroom computing center, on the roof, within 100 ft of maybe 
150-200 networked computers.  Surprise Surprise, S-9 white noise hash on 
most bands.
My question is, We need to have the Transmitter and winlink setup located at 
a classroom teaching position, along side the HF station, but it may be 
possible to move the antenna some distance away from the building.  Is it 
likely that a movement of the antenna from directly over the computing 
rooms, to, say 150 ft horizontally away will reduce the current noise 
sufficiently to be usable?  How rapidly does the signal intensity decrease, 
as I move the antenna away from the building?

Thanks,

Pat Barthelow    aa6eg at hotmail.com