[EMAIL PROTECTED] wrote:
On Mon, Apr 28, 2008 at 11:56:26AM -0700, Ralph Shumaker spake thusly:
band bouncing off the upper atmosphere? And why would small planes interfere? Is it their radio equipment? Or are they just "blocking" the signal?

They wouldn't. How close are these planes that you are seeing? If you live
in La Mesa and look outside when you notice interference and happen to see
a plane in the air it is because there are always planes in the air over
La Mesa. Small planes carry VHF radios and each plane spends very little
time transmitting. As a pilot I can't conceive of how they would affect
your TV reception.

TV reception is affected because the TV signals are bouncing off the planes which then causes multi-path reception.

Gus


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