SSTV operation is entirely bus voltage driven. If there is plenty of voltage, then SSTV will be frequent. If it is dark and battery voltage is blow somehing like 6.8? volts then it will not transmitt SSTV. SSTV takes a lot of power. You can see the bus voltage as the firs channel in the T$SSS,VVV,III, TTT,TTT,... telemetry. Volts is in hundredths.
Bob
On Fri, Jul 5, 2019 at 9:27 PM Hans BX2ABT via AMSAT-BB amsat-bb@amsat.org wrote:
Nobody knows? Here in east Asia some other hams are asking the same. We have good passes late at night (1400 UTC), but no PSK31 or SSTV seen at all. --Hans BX2ABT
On 07/04/2019 10:48 PM, Hans BX2ABT via AMSAT-BB wrote:
Hello all. At what intervals do the SSTV and PSK31 telemetry get broadcast? Just had another good pass, saw some SSTV in the beginning, but until LOS not a single blip heard. Same yesterday. What gives? 73 de Hans
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Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb