I spent a number of years working at a firm that made digital loop
carrier equipment for the telephone companies, and would occasionally be
called to go out to the field and find out why earlier equipment was
being interfered with.
In Nutley, New Jersey, there is or was a local a.m. station with a
short, top loaded vertical, and when I went out there I was able to
confirm that yes, its audio was definitely getting into subscriber
equipment.
It's not that it was our digital loop boxes doing this – but it seems
that the complaints began when the NJ baby-Bell installed it. A little
poking around revealed that the field strength from the broadcaster was
quite in excess of the GR1089 requirements we had to meet.
And that interference had preexisted the installation of our equipment
on the poles. What changed?
The radio station was sold and no longer concentrated on "easy
listening" music; NOW it was nonstop Korean language evangelical
services – and THAT was when the complaints started. No more free music…
Cortland Richmond
On 3/23/18 10:49 AM, Grasso, Charles wrote:
Hi all,
I am writing a column internal to my company about the topic
of EM emissions. Considering the topic(!) I would like to
add some humor to keep the reader engaged.
I would be grateful if any of you that have humerous stories
related to EMI that you would share them with me!
Thanks
Charles Grasso
(w) 303-706-5467
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