LEO satellites at 2242.5 MHz
Sven Grahn
Click on the links to
go to the waterfall images
23
November 2007, 1735.50 - 1737.10 UT: 4.5 kHz wide signal with about 9
visible carriers. The Doppler shift was very fast=24 kHz/min.
29 November 2007, 0545 (approx) - 0548.40 UT:
Carrier.
Inflection point near 2242.482 MHz. Strange shift in frequency near
inflection point.
11 December 2007,
1841.06 - 1849.26, I have coloured the trace yellow to make it easier
to
read on this very slow waterfall.
USA-129 matches the 11 December 2007 observation. The elset (this is an
elset not originating from www.space-track.org) used is:
USA 129
1 24680U 96072A 07341.44605345 0.00007500
00000-0 90656-4 0 05
2 24680 97.7767 33.6836 0499271 112.3136 247.6863
14.80897619 0
If my PC clock was offset about a minute (on Dec 10 my PC clock was 42
seconds behind actual time) the 23 Nov observation may match (this is an elset not
originating from www.space-track.org):
KH 9-19 ELINT
1 15071U 84065C
07327.72171196 .00000240 00000-0 28593-4
0 00
2 15071 95.9032 350.2071
0006000 324.7393 35.2606 14.84402695 04
None of USA-129, USA-186, DMSP F-14, F-15, F-16, F-17 fit the 23
November 2007 observation or the 29 November 2007 observation.
23
November 2007
29 November 2007
11 December 2007
