It is very possible that the mode change on Feb 27 (to V/S) will be postponed. The satellite is still seeing periods of "eclipse" due to sun angle, etc. At this point we need full sun to operate in S-band, so the mode change is dependant upon telemetry showing that we are good to go.

Things might work out, but my hunch is that we'll have to postpone a day or two.

Updates will be posted here as things play out.

73,

Mark N8MH

...

-----Original Message----- From: amsat-bb-bounces@amsat.org [mailto:amsat-bb-bounces@amsat.org] On Behalf Of Mark L. Hammond Sent: Thursday, February 24, 2011 12:01 PM To: Amsat - BBs Cc: ao51-modes@amsat.org Subject: [amsat-bb] AO-51 schedule for February, March 2011

Hello All,

Here is the AO-51 schedule for the next few weeks. There is a little bit of something for everyone in here!

Keep in mind that the schedule is subject to change due to power budget and/or telemetry downloading.

February 21 (~2145 UTC) [Eclipses should end around Feb. 24/25]

Dual Voice Repeaters : Mode V/U FM Voice Repeater (no PL tone needed) Uplink: 145.920 MHz FM Downlink 435.300 MHz FM

Mode L/U FM Voice Repeater (no PL tone needed) Uplink: 1268.703 MHz FM Downlink 435.150 MHz FM

February 27 (~2100 UTC)

Mode V/S Voice Repeater (no PL tone needed) Uplink: 145.880 MHz FM Downlink 2401.200 MHz FM

March 3 (~1030 UTC)

Mode V/U FM Voice Repeater (no PL tone needed) Uplink: 145.920 MHz FM Downlink 435.300 MHz FM

Mode L/U PacSat BBS Uplink: 1268.703 MHz FSK 9k6 baud Downlink 435.150 MHz FSK 9k6 baud

March 6 (~2115 UTC)

Mode L/SU FM Voice Repeater (no PL tone needed) Uplink: 1268.703 MHz FM Downlink1 2401.200 MHz FM Downlink2 435.300 MHz FM (low power)

March 11 (~1000 UTC) [Eclipses return around March 12/13]

Mode V/U FM Voice Repeater (no PL tone needed) Uplink: 145.920 MHz FM Downlink 435.300 MHz FM

Mode L/U PacSat BBS Uplink: 1268.703 MHz 9k6 baud Downlink 435.150 MHz 9k6 baud

As always, command stations may need to reconfigure modes in order to collect telemetry as needed.

Remember that power management may be running, and the transmitter(s) will shut OFF during periods of eclipse and/or low battery voltage.

73,

Mark N8MH AO-51 Command Team _______________________________________________ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb

-- Mark L. Hammond [N8MH]