[RFI] ULTRASONICS for RFI SLEUTHING

[David Eckhardt <davearea51a@gmail.com>]

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:

            https://youtu.be/H8z02pICisM

-- 
Dave - WØLEV
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