Wouldn't the microwave feed horn act more as aband-pass fileter
than as a high-pass filter?
-----Original Message-----
From: tentec-bounces@contesting.com
[mailto:tentec-bounces@contesting.com]On Behalf Of Ken Brown
Sent: Saturday, July 02, 2005 10:27 PM
To: Discussion of Ten-Tec Equipment
Subject: Re: [TenTec] radar
Hi,
Radar speed guns use doppler shift to determine the speed of an
object
that is reflecting a signal back to it. Some (if not all) radar
guns use
the beat note between the TX oscillator and the incoming signal
to
measure the doppler shift of the returned signal. Any signal
received by
the radar gun receiver which produces a beat note in the detector
can
conceivably generate a calculated speed indication, whether the
signal
comes from a reflection of the transmitter signal from a moving
object,
or if the signal comes from some other source altogether.
It is unlikely that your radio gear could produce enough
harmonics up at
the microwave frequency the radar gun is listening to, to
generate a
reading. And radar gun receiver overload due to high power is
unlikely,
because the microwave feed horn acts as a high pass filter.
Not impossible though.
DE N6KB
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