On 4/3/2014 10:10 AM, Rob Atkinson wrote:
I think Dale's message was not the futility of mending one problem but
the shear plethora of problems in a town or city.
EXACTLY! You don't have one noise source, you have dozens of them.
If you want a fast education on the noise environment, find a VHF/UHF
mobile rig that can receive AM, program it for frequencies around
150-160 MHz, 300 MHz, 400 MHz, and 500 MHz, and drive around listening
to it. I live in the Santa Cruz Mountains, closest house about 300 ft
from my antennas, most houses at least twice that distance. As I drive
around out in the country listening on 160 MHz, I hear noisy power lines
and occasional noise sources in homes, but there are lots of places
where it's RF quiet. As I drive into town, even a small town, noise is
everywhere.
Those UHF frequencies help me zero in on a broadband source like a power
line arcing -- when I hear it at 500 MHz, I know I'm real close. I'm
using a Kenwood TM-V71A mobile rig, and a TH-F6A talkie, both of which
can receive AM in this range. I don't know what other rigs have this
capability.
73, Jim K9YC
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