At 10:06 AM 03/31/06, you wrote:
>I had a question from a friend which I can't answer ... I've never
>heard what he's referring to. Is there anyone here who can confirm or
>correct this:
>"One of our local repeaters has a popping noise that gets severe
>during high wind conditions.  I have "heard" that LMR type coax can
>cause this noise. Various reasons have been discussed including the
>dis- similar metels between the inner and outer shield, also nicking
>the copper clad on the center conductor.  I am told this condition
>only occurs on a repeater using the same coax for Rx and Tx. The
>repeater in question has a very clear signal when transmitting, the
>noise only comes on while receiving a signal, both with and without
>modulation.  This leads me to susspect the "dis-similar metals" theory."
>I'd appreciate any insight you may have on the question, preferably
>directly to me
>Thanks in advance

Check out these two pages:

These pages are linked off the master index page for antennas, 
duplexers, isolators, etc
at <>


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