An interfering RF signal can be heard pulsing over a weak 1 kHz modulated FM modulated UHF test signal.
Note: The interferer was tracked down and is shown in this video:
http://www.youtube.com/watch?v=m5MZYdQM3SI
Repeater is an old GE MASTR Pro model (mid to late 60's) using tubes in the transmitter RF Driver and PA stages and transistors everywhere else.
A quick video showing the RX strip from this type of equipment being checked with a weak signal: http://www.youtube.com/watch?v=CKXwxjUditA
12 dB SINAD test: http://www.youtube.com/watch?v=9EhOkyTYmU8
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@cleosimble "whats that popping?"
A malfunctioning municipal transmitter about 5 or six miles away; I show the location on another video after having tracked it down ...
I should add a link to that video to the 'Show more'/description section! Thanks for asking that question.
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uploadJ 9 months ago
whats that popping?
cleosimble 9 months ago