My radio club has to move to a new location due to a property sale. One
site we were offered is in a two story building and seems great except
for two issues:
1. In 1999 a new light rail train is being installed next to the
building. This system has overhead wires and will be maybe 150 to 200
feet from the antenna. Would this be likely to generate AC hash on the
HF bands?
The light rail system is currently running in the San Jose area and this
is an extension. We intend to try to see what the noise looks like on
mobile rig in the San Jose area where it currently is operating. It
occurs to us that not only is sparking a common event, but if the trolley
is a mile or two away, any sparking might be radiated through the
overhead conductors. Do I worry too much?
I should add that the club station primarily is used on HF and is a
contest grade station.
2. On the roof of the large building is a 40 foot Rohn tower that is
unused! But about 100 feet away, also on the roof, is a new 1900 MHz
digital cellular antenna, about 30 feet above the roof. I suspect that
the filtering on the cellular equipment is pretty tight but would this be
a problem of us (receiving interference) or would our 1500 watt HF
station get into the cellular equipment?
The roof is about 35 to 40 feet high so this would seem like a good site
if the two issues above are manageable.
Thanks very much for your assistance.
Jim Woods, KC7FG
Lockheed Martin Employees' Recreation Association Amateur Radio Club
Sunnyvale, CA
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