On Sat, 28 Oct 2006 10:33:41 -0600, Tim wrote:
>There was a ham in our area that was so negative about cable that he set up
>his packet bbs station with a 300 watt 2 meter amp to reach a digi 1/2 mile
>from his home. Plus it was set up to beacon every 30 seconds.
While I certainly don't condone intentional QRM, when the cable system chose
to convert TV to VHF frequencies allocated to other users, it assumed the
responsibility for preventing QRM to and from licensed users (including
listeners to licensed services). The decision to make that conversion was a
calculated one based on cost and benefits. Sometimes the optimistic
assumptions about cost (and the law of averages) catches up with that
decision.
If a ham is trying to do weak signal work near a leaky system, he might
easily be limited by the sidebands from Ch 18. Luckily, if the vestigal
sideband filters are working properly, there shouldn't be much in the 144-
144.4 MHz segment.
I enjoyed your story re: the small town cop. A bit over a year ago, I got a
similar "bums rush" from an audio company who was selling a digital power
amp with LOTS of trash in the AM broadcast band and above. When I tried to
be a nice guy and let them know the seriousness of their problem, the told
me they didn't care, and told me to call the FCC. I did. They stopped
selling the amp a month later.
Jim Brown K9YC
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