AMSAT-NAAMSAT News Service

May 20, 2001

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Phase 3D/AO-40 Update

AO-40 experimental transponder operation continues with U-band and L-band uplinks connected to the S-2 transmitter passband downlink via the matrix switch.

The ARRL is reporting LEILA system information in the recent ARRL Letter. The system subtly (?) discourages operators from putting too strong a signal into the satellite's uplink receiver. LEILA notches out the offender's uplink and sends a siren signal to the downlink for about five seconds.

ANS has received the following from AMSAT-DL:

IHU-2 was turned on again recently as the YACE camera was primed to take 11 pictures at 30-minute intervals starting with Orbit 251. The intent is to get an accurate final attitude reading point prior to commencing operations for the move to ALON/ALAT -270/0.

On May 20th tests of K-band (24 GHz) and X-band (10 GHz) systems (again) were underway. The K-band transmitter output value was as expected during the test and ON4AOD is confident that his module works. However, the squint angle was poor and more testing will be needed.

The S-2 middle beacon (MB) is now again on for the whole orbit. Experimental transponder operation in mode U-L1/S-2 is possible from MA-70 to 209, with squint angles below 20 degrees. The RUDAK downlink is on from MA-30 to MA-69 and MA-210 to MA-239.

(end)

As of May 19th, telemetry was reporting ALON/ALAT to be 4/1.

AO-40 users are reminded that +/- 5 kHz around the Middle Beacon (MB) must be avoided. If the beacon cannot be copied due to interference with users in the passband, transponder operation may be stopped.

Stay tuned to ANS, the official source for news and information about AMSAT OSCAR 40.

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

International ARISS Meeting Held

The ARRL and ARISS reported that members of the Amateur Radio on the International Space Station International Team met recently in the Netherlands. The gathering offered an opportunity to involve all ARISS partners in future activities. Attending the sessions at the European Space Agency facilities in Noordvik were delegates from the United States, Russia, Canada, Germany, Belgium, Italy, France, Japan, Great Britain, the Netherlands, Portugal and Poland.

Those on hand included representatives from AMSAT, the ARRL and the International Amateur Radio Union, including AMSAT-NA's Frank Bauer, KA3HDO, who is the ARISS Administrative Committee Chairman. SAREX Chairman Roy Neal, K6DUE, moderated the sessions.

The ARISS partners reached accord on issues ranging from the scheduling of international ARISS school contacts to future hardware plans and the final design of an ISS QSL card.

The ARISS partners also reviewed applications for several amateur radio projects, including one for a slow-scan television setup. Another project reviewed was a proposal from AMSAT-France to deploy a small satellite from ISS, similar to the mini-Sputnik satellites launched from Mir.

More information about the project can be found on the ARISS web site at http://ariss.gsfc.nasa.gov.

[ANS thanks the ARRL and the ARISS group 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 ans-editor@amsat.org, or to ANS Editor Dan James, NN0DJ, at nn0dj@amsat.org.

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

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