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+---- Thread: AO-73 now in full-time transponder mode (/showthread.php?tid=115)
AO-73 now in full-time transponder mode - Tom VA3TS - 2020-06-10
AO-73 now in full-time transponder mode
After some eight months in continuous sunlight, AO-73 (FUNcube-1) has now started to see some eclipses during each orbit.
The telemetry received has shown that the spacecraft continued to function perfectly during this period and the on board temperatures did not reach excessively high levels.
After this became clear, our next concern was the battery. Having been kept fully charged for this period, would it actually hold a charge and do its job when in eclipse?
After three weeks of increasing eclipse periods we can now see that indeed the Li battery appears to be ok and the bus voltage has not yet dropped below 8.1 volts.
So today we have changed the operating mode from high power telemetry educational mode to continuous amateur mode with the transponder ON.
The telemetry continues to be available, albeit at low power.
We will, of course, continue to carefully monitor the data but are planning to leave the spacecraft in this mode for at least the next week.
Please enjoy using it!
Graham Shirville, G3VZV
of the FUNcube Team, and AMSAT-UK
https://www.amsat.org/two-way-satellites/ao-73-funcube-1/