AMSAT NEWS SERVICE ANS-224

ANS is a free, weekly, news and information service of AMSAT North America, The Radio Amateur Satellite Corporation ANS reports on the activities of a worldwide group of Amateur Radio operators who share an active interest in designing, building, launching and communicating through analog and digital Amateur Radio satellites

Please send any amateur satellite news or reports to:

ans-editor@amsat org

In this edition: * 2007 AMSAT Space Symposium and Annual Meeting - Call for papers * FO-29 Power Status * AMSAT Awards * 100th Anniversary of Scouts Celebrated with ARISS Contact

SB SAT @ AMSAT $ANS-224 01 2007 AMSAT Space Symposium and Annual Meeting - Call for papers

AMSAT News Service Bulletin 224 01 From AMSAT HQ SILVER SPRING, MD August 12, 2007 To All RADIO AMATEURS BID: $ANS-224 01

This is the third call for papers for the 2007 AMSAT Space Symposium and Annual Meeting to be held October 25-28, 2007 in Pittsburgh, Pennsylvania The September 1, 2007 deadline for submitting electronic versions of papers for inclusion in the printed symposium proceedings to Dan Schultz is rapidly approaching

Proposals for papers, symposium presentations, and poster presentations are invited on any topic of interest to the amateur satellite program An emphasis for this year is an educational outreach to middle and high school students In particular, papers on the following topics are solicited:

Students & Education, ARISS, AO-51, P3E, Eagle and other satellite-related topics

Papers should be sent to: Daniel Schultz N8FGV by e-mail to: n8fgv@amsat org

[ANS thanks Dan, N8FGV, for the above information]

/EX

SB SAT @ AMSAT $ANS-224 02 FO-29 Power Status

AMSAT News Service Bulletin 224 02 From AMSAT HQ SILVER SPRING, MD August 12, 2007 To All RADIO AMATEURS BID: $ANS-224 02

The internal impedance of the battery in FO-29 (Fuji-3) is now rising due to the deterioration caused by almost 12 years in orbit According to the telemetry data a 25 minute eclipse duration is estimated as a limit as for the analog battery system use Because the eclipse length of FO-29 (Fuji-3) is currently about 30% or almost 32 minutes, the power supply of the relay with the battery cannot serve a period of the eclipse

A malfunction also occurs in part of the electricity control system The malfunction is the UVC which is an automatic function for electricity management When the satellite is in the eclipse, and the light of the sun is not the solar battery, the transmitter is turned OFF by the UVC It is designed so that later an analog system transmitter becomes ON automatically when the terminal voltages of the battery exceed a set value after the power is available from the solar battery However, it appears likely that a malfunction occurs for this function, and the terminal voltage cannot turn on a transmitter even if it exceeds the set value unless commanded from the ground

The length of eclipses for FO-29 (Fuji-3) will rise in future and rises to 34% in March 2008 and comes over a peak of the eclipse duration When it goes over this peak, the eclipses will decrease slowly, and drop to 20% in August 2009 By February 2010 it is all sunshine with no eclipses for about 8 months It seems that we can apply the analog system relay consecutively for this period

[ANS thanks Mineo Wakita, JE9PEL, for the above information]

/EX

SB SAT @ AMSAT $ANS-224 03 AMSAT Awards

AMSAT News Service Bulletin 224 03 From AMSAT HQ SILVER SPRING, MD August 12, 2007 To All RADIO AMATEURS BID: $ANS-224 03

We would like to welcome the following to the satellite community They have made their first satellite contact and are now members of the AMSAT Satellite Communicators Club

Jeffrey Thomas, K7WIN Robert Rousseau, KI4BKE

AMSAT Communication Achievement Award Michael, Shaffer, KB3P, #452 John Sagi, N3YZ, #453

South Africa AMSAT Communication Achievement Award Rafael Valdez, Jr, XE2RV, #US110 John Sagi, N3YZ, #US111

To see all the awards visit http://www amsat org or http://www amsatnet com

[ANS thanks Bruce, KK5DO, for the above information]

/EX

SB SAT @ AMSAT $ANS-224 04 100th Anniversary of Scouts Celebrated with ARISS Contact

AMSAT News Service Bulletin 224 04 From AMSAT HQ SILVER SPRING, MD August 12, 2007 To All RADIO AMATEURS BID: $ANS-224 04

On Saturday, August 4, an Amateur Radio on the International Space Station (ARISS) contact took place between scouts attending the 21st World Scout Jamboree in Chelmsford, England and Clay Anderson, KD5PLA, aboard the ISS Ten scouts were able to ask two questions each of the astronaut using the special event station, GB100J Approximately 40,000 scouts from 200 countries attended the jamboree Audio was broadcast on the jamboree FM radio station and was webcast on the radio station’s website The audio was also fed into the EchoLink JK1ZRW (277 208) server and received 50 connections from stations in12 countries including 6 repeaters nodes Video and audio may be found on this site: http://www g6lvb com/GB100JISS wmv

[ANS thanks Carol, KB3LKI, for the above information]

/EX

In addition to regular membership, AMSAT offers membership in the President's Club Members of the President's Club, as sustaining donors to AMSAT Project Funds, will be eligible to receive additional benefits Application forms are available from the AMSAT Office

73, This week's ANS Editor, Lee McLamb, KU4OS ku4os at amsat dot org

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