On 07/26/2014 09:24 PM, David Platt wrote:

A few years ago I helped chase down a noise source which was wandering
randomly through the 2-meter repeater input sub-band, and causing
prolonged noisy squelch tails on the ends of transmissions on several
different repeaters in the Silicon Valley area....

Reminds me. Some years back I had the duty of fox-hunting a noise
source inside Great Mall of the Bay Area that was throwing noise on
Milpitas PD's receivers. I wandered around the back doors in the south
core with a PD handheld and a scanner. Turns out a Muzak machine's
power supply was doing it. They sent a replacement and the problem was
gone.

Once there was a laundromat in Redwood City whose TV was spewing junk
around 154 MHz, out the antenna port, jamming Fire channels. I don't
recall how that was resolved, whether an amp was installed isolating the
antenna, or they just got the place a new TV.