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K-band: #1014, #1015



Reception reports for MB on K-band
(0.48m dish, circular feed with integrated pre-amp)

orbit #1014:
Due to low elevation only MA 126 to MA 129 could be tracked.
Squint angle (calculated from orbit #1012, Alon/Alat=-1.4/+2.3 deg)
  3.4 to 2.9 deg.
(S+N)/N max. 5 dB  (telemetry K-Tx power raw max. 89, going
down to 76) 
Frequency shift starting with -3.5 kHz/min, going down to -2 kHz/min
(expected Doppler shift -0.34 kHz/min)
U-band AGC 8 to 15 dB, average around 12 dB.
CW signals about 15 KHz below beacon.

orbit #1015:
Squint angle (calculated from orbit #1012, Alon/Alat=-1.4/+2.3 deg)
  2.6 to 3.2 deg.
(S+N)/N max. 4 dB  (telemetry K-Tx power raw max. 92, going
down to 76), going down to 1 dB
Frequency shift starting with -3 kHz/min, going down to -1 kHz/min
(expected Doppler shift -0.29 kHz/min)
U-band AGC 6 to 17 dB, average around 12 dB.
SSB signals around +/- 12 kHz of the beacon frequency.

Observations:
The beacon strength is obviously strongly influenced by other signals
in the pass band of the K-Tx. It would be very helpful, if stations
using the S-band downlink only, keep clear of the K pass band during
those 18 or 19 minutes. It would give stations receiving on K-band
a chance for a QSO. 
K pass band is 50 KHz only, while S pass band is 250 kHz wide.

	Vy 73 de Viktor OE1VKW
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