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Re: (meteorobs) meteor detection in AM SW band
Hi:
See -- C. R. Kitchen, "Astrophysical Techniques," Adam Hilger, Ltd.,
1984 revised 1991.
Kitchen makes the statement that in radio astronomy - scatter radio
is within this astronomy - the sky is transparent for electromagnetic
radio between 10mm and 10 meters (microwave to 25 mHz). He further
states that electromagnetic radiation greater than 50 meters
(transmitted from earth) fails to penetrate the atmosphere and is
reflected back into the atmosphere.
The 10 and 11 meter bands are on the threshold of frequencies to be
reflected from an ionization trail.
It is a chalange to see how many stations can be received.
George John Drobnock
--- In meteorobs@yahoogroups.com, Miguel Angel EA4EOZ <ea4eoz@u...>
wrote:
> I made some experiments on 10m band using ham beacons, like DL0IGI
and
> DK0TEN, and the results were very poor, mainly because the
extremally
> low signals (FFT soft a must). It's much better around 50 MHz with
the
> KW TV stations :-)
>
> Greetings!
>
>
> > Hi:
> > I remember seeing an article that discussed scatter in the 10 and
11
> > meter band using AM modulation.
> > George John Drobnock
>
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