Hi Charlie,
G3WDG wrote:
> FYI, I have just been experimenting with ISCAT-B on 10GHz EME using
> r5637 on 5 sec periods with some success:
>
> 201510 2 -8 4.2 0 0 * HELLN LOON 11 1 9 0.0
> 201520 4 -6 3.7 0 0 * HELLO MOON 11 1 10 1.1
> 201530 1 -7 3.1 0 0 * MOOO-HEKKO 11 0 8 5.6
> 201540 3 -2 2.6 0 0 * GDLLO/MPON 11 0 10-15.0
> 201550 1 -5 2.6 -22 0 * FML0/MOOX- 11 1 10 -0.7
> 201600 2 -6 2.6 0 0 * N-HELKO MOO 11 1 8 5.6
>
> Signal spread 120Hz.
Interesting!
As I'm sure you appreciate, it works because (1) your echo is strong,
and (2) although the limb-to-limb Doppler spread was ~120 Hz, the
frequency profile is rather sharply peaked. A majority of the echo
power is spread by less than the ISCAT-B tone spacing (46.875 Hz).
I note that almost all of the erroneous characters are off by only
+/- 1 letter. Tells you something about the encoding scheme and the
propagation-induced distortions of the signal. :-)
-- 73, Joe, K1JT
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