AO-51 in eclipse
Geplaatst: 24 nov 2011, 20:48
AO-51 die na veel problemen weer goed werkt in QRP-mode komt eind november/begin december in zijn eclipse en zal daardoor minder zon ontvangen met de nodige gevolgen.
Zie orgineelbericht hieronder van Amsat.
UPDATE:
After much trial and error, we have found a "sweet spot" where AO-51 will stay operational through eclipse for the time being. Cell 3 is a dead short, and cell 2 now goes to zero in eclipse also. It's amazing the satellite will operate on 2/3rds the designed voltage input!
How long AO-51 can be kept operational is anyone's guess. By the end of this year, eclipses will be headed for 30 minutes long. It is unlikely it will continue to operate as-is at that point. Enjoy while you can.
Uplink is 145.880, no PL
Downlink is 435.150 at about 1 watt
73 de Hans, PE1BVQ
Zie orgineelbericht hieronder van Amsat.
UPDATE:
After much trial and error, we have found a "sweet spot" where AO-51 will stay operational through eclipse for the time being. Cell 3 is a dead short, and cell 2 now goes to zero in eclipse also. It's amazing the satellite will operate on 2/3rds the designed voltage input!
How long AO-51 can be kept operational is anyone's guess. By the end of this year, eclipses will be headed for 30 minutes long. It is unlikely it will continue to operate as-is at that point. Enjoy while you can.
Uplink is 145.880, no PL
Downlink is 435.150 at about 1 watt
73 de Hans, PE1BVQ