El 09/11/15 a las 10:10, David escribió:
SWL report of AO-85 during its orbit #456 + 11mins at 09:39 UTC No telemetry heard. No beacon heard. Is sat still on COR mode?
El 09/11/15 a las 10:18, Dani escribió:
That's a bit weird, isn't it? VK5HI reported telemetry at 6:25 UTC today:
I coincide in the opinion that the audio is clearer without DUV
telemetry.
73,
Dani M0HXM/EA4GPZ.
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Hi all:
Now orbit #457 + 12 minutes
Double checked. No telemetry at all neither in this pass. EA1JM confirms the same.Satellite was busy and several stations were making QSOs.
At least from my side, same comments and feelings as in my previous RXed pass: Nothing have changed regarding the uplink issues and downlink quality looks to be better (Both audio and signal strength) than when in the normal modes.
Question: I understood that the uplink dificulties were related to some issues regarding 67Hz reception on the sat. If the COR mode doesnt handle 67Hz at all and is an "Open Squelch" mode... Should not "life be easier" to be repeated by the sat?.
73s David EA4SG
El 09/11/15 a las 11:53, David escribió:
Question: I understood that the uplink dificulties were related to some issues regarding 67Hz reception on the sat. If the COR mode doesnt handle 67Hz at all and is an "Open Squelch" mode... Should not "life be easier" to be repeated by the sat?.
Hi David,
When 67Hz detection is active, the satellite keeps the squelch open for a minute after it loses the 67Hz tone. In my experience, usually the satellite will keep its squelch open throughout all the pass or most of the pass. The satellite will keep the squelch open even if 67Hz tone detection keeps dropping all the time, as long as it detects the tone for a couple of seconds often enough.
It seems that the problem is not that the sat doesn't open the squelch. The squelch is opened but the satellite transmits only noise or a signal which is too difficult to copy, because the satellite didn't hear the uplink signal so well, but it's repeating it anyway.
That goes as far as I understand. Perhaps people in the Fox team will be able to confirm or comment on this.
73,
Dani M0HXM/EA4GPZ.
participants (2)
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Daniel Estévez -
David