I'm friendly with the RFI sleuth with our local electric coop (also a ham).
He tells me that ground level ultrasonic sniffers are pretty worthless. Any
physical obstruction attenuates the signal, according to him. They do use one
but on a hot stick where it can sniff up close. Unfortunately, it's a union
shop so he can't do it and has to have a line crewman do it. The logistics of
this are really detrimental to efficiency. (Unspoken opinion of unions goes
Date: Tue, 10 Dec 2019 17:47:18 +0000
From: David Eckhardt <firstname.lastname@example.org>
To: Rfi List <email@example.com>
Cc: "Bascombe J. Wilson" <firstname.lastname@example.org>, Terry Bullett
<email@example.com>, Ted C <firstname.lastname@example.org>, Greg Ella
Subject: [RFI] ULTRASONICS for RFI SLEUTHING
Content-Type: text/plain; charset="UTF-8"
Use of an ultrasonic detector is highly useful in finding discharges on the
electric distribution grid, especially localized to the home neighborhood.
Sure, MFJ makes one, but there is an option I ran across on the AirSpy
group. if you have a Discovery (or R3 modified HF+) from AirSpy, you have
an ultrasonic receiver. Have a view of the following link:
Dave - W?LEV
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