Two VHF repeaters in town have been bothered by this from time to
time.. The first, which only occasionally gets it, but gets it LOUD
when it happens, is 146.730- The second (mine) at 146.850- is
getting it almost continuously now, but weak, ranging from "will
open squelch" (even with PL!) to "Will hold squelch but won't open
it" Unfortunately, it's putting enough energy out at low
frequencies that the PL board is seeing a tone, so PL won't save me.
The noise has an echoing quality that I think is VERY distinctive,
but I can't figure where it's coming from.
It's not happening in either repeater, we've had the opportunity to
completely shut down the machines when it's happening.
The two repeaters are maybe 1000' apart.
I've only started having a problem with it since replacing my
antenna so that I'm no longer stone deaf.
I have a 5M wav file of the noise, if anyone's interested.
It sounds like broadband noise at first, but then you notice
the "feedback-ish" sound in it. At times we've heard what seems
like bits of audio in the noise.
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