Stensat Telemetry
Default telemetry is once every 5 seconds. This may be changed by DTMF command to once every 120 seconds. When telemetry is transmitted, the receiver squelch control is turned off (low).
DTMF Commands
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#7464464 Pings packet once |
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#7370563 Report extended packet |
Telemetry Packets
The normal telemetry packet looks like:
N4AFL-1>TELEM<UI C>: T#000,255,004,037,129,032,010 STENSAT PICOSAT
where the Telemetry numbers are (in order):
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Sequence number - goes to 255, then rolls to zero |
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Power supply monitor |
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Current monitor |
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Temp monitor |
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2.5 volt reference |
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Current RSSI value |
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Three light sensors (low value means light is striking the sensor): |
Light sensor values are (in order):
1. Flat face (3 by 4 inches)
2. Long side (1 by 4 inches)
3. Short side (1 by 3 inches)
Additional packet trailer will appear when requested with the report extended packet command: *CH X000 B000 L000 000 000 R032 D128
where:
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X is the radiation checksum (nominally zero) |
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B is the reboot counter - incremented each reboot |
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L is the three light sensors connected to B7, B6, B5 |
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R is the RSSI threshold. |
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D is the antenna release threshold. |
Morse ID
A Morse code ID is sent every four minutes (240 seconds). The current ID is:
STENSAT DE N4AFL/1