[TenTec] RFI Issues

Stuart Rohre rohre at arlut.utexas.edu
Thu May 17 13:13:19 PDT 2012


Jim I respectfully disagree, as I have seen examples of radiating 
"ground" wires causing RFI.  These were typically way too long, from an 
upper story station location.  Not only ham locations, but in 47 years 
of industrial RFI/ EMC work, too long a shield, or too long an earth 
return has been seen to either radiate or pick up RF easily.  One case 
was long transducer shield returns broadside to the near field of an AM 
station close by the university campus.  The reception on the shields 
was conducted to the monitoring equipment where it created noise on the 
transducer signals.

I agree with bonding the various house grounds; but even with that, I 
would not rely upon a 20 foot run to earth from a shack to not be hot 
with RF, given the inquirer was using an antenna low to the roof just 
above his shack.

Stuart Rohre
K5KVH


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