August 12, 2001

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AO-40 Update

AO-40 command station Stacey Mills, W4SM, reported to ANS that during orbit 362 while AO-40 was in view of most of the Eastern Hemisphere, the S-1 transmitter abruptly stopped transmitting. Telemetry readings up until the moment of cessation (voltages, currents, temperatures, etc.) were completely normal. No ground control or commanding or experimentation was being done at this time. Prior to this event the S-1 downlink transmitter had produced excellent results. Many stations reported much stronger downlink signals via the S-1 transmitter.

The scheduler switched the S-2 transmitter on at the appropriate time.

An initial attempt to manually switch the S-1 transmitter back on did not appear successful. While we study this situation further, the S-1 downlink has been taken out of the schedule. Thus, the U/L-1 to S-2 passbands are currently active.

RUDAK testing continued on orbit 349 and orbit 354. Testing during these two orbits was very successful. Bdale, KB0G, is periodically posting brief RUDAK updates via the Internet at

ALON/ALAT was also re-adjusted to the edge of the solar sensor wall, with ALON slowly decreasing. Stacey reports that when the ALON decrease begins to affect downlink signals, it will be again adjusted. In addition, Sun movement in the next few weeks will allow command stations to move the satellite closer and closer to 0/0 ALON/ALAT numbers.

The current ALON/ALAT (as of orbit 358) is approximately 346/3. This is based on solar angle measurements only, but should be reasonably accurate.

JAMSAT informed ANS that it was pleased to announce the SCOPE camera on AO-40 successfully captured its first image in orbit. The image is available for viewing on the JAMSAT SCOPE home page at

The image shows a beautiful, crescent blue Earth and suggests the possibilities of AO-40's SCOPE cameras!

AMSAT-NA President Robin Haighton, VE3FRH, found the image breathtaking. "Congratulations to all the SCOPE and RUDAK crews for a very notable achievement. Thank you from the Board of Directors, officers and members of AMSAT-NA," said VE3FRH.

Stay tuned to ANS, the official source of AO-40 information.

[ANS thanks AMSAT-NA and AMSAT-DL for this information]

New AO-40 Logo

AMSAT-UK congratulates Gene Marcus, W3PM, on winning the competition to find a new logo for AMSAT OSCAR 40.

The new logo can be viewed (and downloaded) from the AMSAT-UK web site at

The competition was held to design a new logo for AO-40, replacing the existing Phase 3D design. The winning design by W3PM was chosen by delegates attending the 2001 AMSAT-UK Colloquium. AMSAT-NA President Robin Haighton, VE3FRH, and AMSAT-DL President Peter Guelzow, DB2OS, also approved the new design.

The new logo will now be employed as a visual tag for AO-40, in print, websites, patches, etc. The new logo will also help to publicize the existence of AO-40 as a major amateur radio achievement.

AMSAT funds have also benefited from this competition!

Congratulations to W3PM!

[ANS thanks Richard Limebear, G3RWL, for this information]

K9EK Award

"Getting Started with AMSAT-OSCAR 40" has won the author, AMSAT-NA's Ed Krome, K9EK, a QST Cover Plaque award. K9EK is well known as for both his microwave design and writing skills in the AMSAT community.

The AO-40 article recently appeared in QST.

The QST Cover Plaque is given to the author of the best article in each issue, as determined by a vote of ARRL members. Voting takes place each month on the Cover Plaque Poll web page.

Congratulations K9EK from ANS!

[ANS thanks the ARRL for this information]

ANS in Brief

ANS news in brief this week includes the following:

Weekly Satellite Report

Link to the weekly report on satellite ...

All Satellites
ISS . RS-12 . RS-13 . RS-15 . AO-10 . UO-11 . UO-14 . AO-16 . DO-17 . WO-18 . LO-19 . FO-20 . UO-22 . KO-23 . KO-25 . IO-26 . AO-27 . FO-29 . TO-31 . GO-32 . SO-33 . PO-34 . SO-35 . UO-36 . AO-40 . SO-41 . SO-42

Please send any amateur satellite news or reports to the ANS Editors at, or to ANS Editor Dan James, NN0DJ, at

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This week's AMSAT News Service bulletins were edited by AMSAT  News Service editor Dan James, NN0DJ.