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Probably to recover the frequency for a newer satellite. The spectrum they transmit on is quite scarce.
by jandrese 1y ago
Probably to recover the frequency for a newer satellite. The spectrum they transmit on is quite scarce.
- egorfine 1y agoMakes total sense, thank you
- pbhjpbhj 1y agoHow locked down are they? Should I expect to see a hacker conference talk "how i revived a weather satellite"? Maybe once they're turned off they're irrecoverable?
- rajer 1y agoIt's not impossible https://www.youtube.com/watch?v=HT2i7mFpFxM https://www.youtube.com/watch?v=HT2i7mFpFxM
- sephamorr 1y agoThere have been numerous issues in the past with 'dead' satellites waking back up and activating transmitters again, generally making a mess of the spectrum. Some satellites have pyro-fuses on the power lines from the solar arrays that are fired during passivation to make absolutely sure that the sat doesn't ever recharge and wakeup.
- immibis 1y agoYou have to have an antenna pointing at the satellite though. That's an additional layer of selectivity.
- 747fulloftapes 1y agoI agree they may want to reuse the spectrum, but I doubt it would be for a new satellite. At least not the stuff in the lower VHF band, around 137 MHz which is awfully close to the airband reservation used for VDL Mode 2 - around 135-137 MHz, IIRC. VDLM2 is in many ways a more modern ACARS. They'd more likely use higher bands on newer satellites to get more throughput. The GOES birds transmit up around 1.7GHz, afaik and likely higher as well.