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@bellsouth.net>
To: <topband@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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_______________________________________________
Stew Perry Topband Distance Challenge coming on December 29th.
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