Topband: Power Line Noise Detecting

[ZR]

I use an old CATV RF sniffer that was $10 at a hamfest, they got replaced 
whenever the systems added more bandwidth and are used by the techs to 
certify a new build or later to do leakage tests. Tuneable, AM/FM detectors 
and an analog meter. Mine goes to 400 MHz and has found every problem Ive 
encountered.

Carl
KM1H


----- Original Message ----- 
From: "THOMAS M GREENWAY" <k4pi at bellsouth.net>
To: <topband at contesting.com>
Sent: Friday, January 04, 2013 3:57 PM
Subject: Topband: Power Line Noise Detecting


Good job up to the last step. After getting where I think I have the pole 
with the VHF TRF receiver I use a Ultrasonic detector that was shown in QST 
by W1TRC. It will enable you to 100 % verify the problem is on the pole you 
suspect. You can actually hear the arc if it is in line of site of the mic. 
I had been fooled a couple of times using the VHF antenna thinking I had the 
right pole and the Ultrasonic found it was actually an adjacent pole. The 
power company also use these but a much more expensive model. The W1TRC can 
be built for under $100. There could possibly be a condition where the arc 
is internal to the transformer or on top of an item where the mic can't hear 
it but so far it has worked 100 % for me over many years. 73 Mike K4PI
_______________________________________________
Stew Perry Topband Distance Challenge coming on December 29th.


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