[R-390] Line Noise and Balanced Antennas

Flowertime01 at wmconnect.com Flowertime01 at wmconnect.com
Mon Apr 25 20:50:47 EDT 2005


Jim,

Yes, a balanced input can help.

However YMMV.

If you have lots of RF noise hitting your antenna, balancing the feed line is 
not going to be the saving grace. I just put up a post earlier about using 
some IBM twinax to feed an R390. My noise was from my own equipment in the 
garage with my receiver.

The use of a balanced line and dipole antenna helped me with some of the 
other neighborhood noise. I was never able to cure it all. 

However, the trouble of installing the Twinax between the receiver and a 
match box outside where the coax came down from the antenna was really worth the 
effort for me. Maybe just getting that much shielded cable as a ground strap 
between the receiver and a good ground was as much help as anything.

Been there done that, think it was worth doing.

Roger KC6TRU










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