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Old August 15th 06, 01:54 AM posted to rec.radio.amateur.antenna
Owen Duffy Owen Duffy is offline
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First recorded activity by RadioBanter: Jul 2006
Posts: 168
Default QFH Antenna and 72ohm TV Coax

On Tue, 15 Aug 2006 00:17:40 GMT, "Jerry Martes"
Not that it makes alot of difference, but, you could have been hearing
NOAA 17 on 137.62. Its coordinates may have been different from where you
were anticipating while orienting your 200mm scanner whip.
And, as you probably know you'll need about 30 KHz minimum if you want to
produce images from the NOAA satellites. I think the IC R20 selectivity
is either too narrow or too wide for producing APT images even when the
signal strength is adequate. But, you probably knew that.


It was actually NOAA 15 that I heard (sorry for the typo) and I was
listening to the APT signal on 137.5MHz in USB mode. I am pretty
confident it was the bird, the doppler shift changed direction at the
right moment.

I was more interested in the strength, I couldn't find a ready source
of link budget calcs on the 'net.

Owen
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