[HamSat] AO-51 Update Information

[Timothy Pickett]

AO-51 News From the Control Team
Echo Schedule

Update 6 Sept -- Schedule Change

Due to Tropical Storm Frances, which forced me to take down my antennas, the
Echo schedule has been changed. We will postpone the PSK31 test until
Tuesday 14 September. See below.

73 KE4AZN


FM Repeat -- 2 Sept through 10 Sept

Echo is back in FM repeat mode on 435.300 mhz downlink. The BBS is closed.


Command Station Testing - 11 Sept until 14 Sept

On 11 Sept Echo will be turned off for all user activity, to allow testing
by command stations on the 38k4 high speed digital system. Plans are to
first test the 38k4 downlink on UHF (435.150), and then move to S Band
(2401.200). During testing the high speed digital downlink will be turned on
for complete orbits. Not just over a command station as during past tests.
Echo will send Telemetry data on the 38k4 downlink just as it does now at
9k6. Therefore stations with 38k4 capability are welcome to monitor and test
their ability to "make bits" at 38k4.

TXB (435.300) will be off during this work.


Experimenters Tuesday (rescheduled from 8 Sep) for 14 September

The plan for is to test the feasibility of running PSK31 on Echo. As before,
reports to the amsat-bb will be needed. I am not setup for this mode so I
need your feedback to know if it works.

Uplink: 10 meter band: 28.140 mhz USB PSK31 ONLY
Downlink: 435.300 mhz FM, Continuous Transmission, Power level to be
determined

The 9k6 digital downlink will most likely be off during the test.


Experimenters Wednesday for 15 September

Tentatively scheduled will be a test of the 38k4 digital downlink allowing
user access. The exact mode will be determined by the command station
testing detailed above.

Uplink: TBD Freq, 9k6 Digital, Pacsat Broadcast Protocol (PBP)
Downlink: TBD Freq, 38k4 Digital, PBP


Other Items

Power Consumption looked good while we were running the Mode L/S test on
Wednesday. So look for more Mode L/S in the future.

Check back to this page for the latest updates, plans, and schedule.

73 KE4AZN
Echo Command Team