If I didn’t say it, what it tried to say was if I hear the arc 100% this
pole has a problem. The antenna on the Ultrasonic has a very very narrow
pickup range and you have to move very slowly over every piece on the pole.
If I don't hear the arc there could still be a problem on the pole although
I have not run into this case yet. Radar Engineers makes an expensive model
for the power companies http://radarengineers.com/rfitvi.htm#spark
Agreed on the radio to get to the area. I use a Radio Shack Aircraft band
with a 3 ele yagi. 73 Mike
-----Original Message-----
From: Tom W8JI
Sent: Sunday, January 06, 2013 7:10 AM
To: THOMAS M GREENWAY ; [email protected]
Subject: Re: 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.>>>>
That isn't actually 100% verification, or even near 100%.
Most RFI generating arcs make broadband acoustical noise, but not all of
them. No single method is ever 100%.
I would guess ultrasonic is around 80% or so, and it still takes a "radio"
to get to the pole.
_______________________________________________
Stew Perry Topband Distance Challenge coming on December 29th.
