@radiofreqs How is AO-7 these days? What is the proper current etiquette / method of working this grand old bird? I’ve read about this, but most such primers are years old. I’d not like to over draw hims old linear transponder if I give it a go. Thanks!

@Shufei Just today there was some information sent out by AMSAT regarding AO-7.


"AO-7 to Enter Full Illumination Period October 9, 2019

"On or about October 9th, AO-7 will enter a period of full illumination that will last until approximately December 2nd. During this time, the satellite’s onboard timer should switch it between Mode A (145 MHz uplink / 29 MHz downlink) and Mode B (432 MHz uplink / 145 MHz downlink) every 24 hours. To check or report the satellite’s current mode, please see the AMSAT Live OSCAR Satellite Status Page at amsat.org/status/.

"Reporting observations during the first few days of the full illumination period will be helpful for determining the approximate time of the daily mode change.

"Historical information on AO-7’s systems, including the functioning of the 24 hour timer, and operational plans can be found in the AMSAT-OSCAR 7 Technical Operations Plan And Experimenter’s Guide, available at tinyurl.com/ANS-279-AO-7.



For others that might be interested:

"AO-7 became non-operational in mid 1981 due to battery failure . In 2002 one of the shorted batteries became an open circuilt and now the spacecraft is able to run off solar panels. For this reason it is not usable in eclipse and may not be able to supply enough power to the transmitter to keep from frequency modulating the signal. When continuously illuminated, the mode will alternate between A and B every 24 hours.

In a few days the satellite will be entering and prolonged period of continuous illumination, from about 9-Oct to 2-Dec.



@radiofreqs Time to meet the granddaddy of all amsats. I figured he would be in sunlight soon. Thanks heaps!

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