AMSAT-NA

AMSAT News Service
Weekly Satellite Report

December 2, 2001

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

ANS News Bulletins for this date
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Phase 3D / AMSAT-OSCAR 40 / AO-40

Launched: November 16, 2000 aboard an Ariane 5 launcher from Kourou, French Guiana.
Uplink U-band 435.550 to 435.800 MHz CW/SSB
L1-band 1269.250 to 1269.500 MHz CW/SSB
L2-band 1268.325 to 1268.575 MHz CW/SSB
Downlink 2401.225 to 2401.475 MHz CW/SSB
For the current transponder operating schedule visit http://www.amsat-dl.org/journal/adlj-p3d.htm

Status: Currently, the U/L-1 to S-2 passband is active.

Happy birthday AO-40, celebrating 1-year in space!

AO-40 experimental transponder operation started on May 5, 2001 at approximately 08:00 UTC when the U-band and L1-band uplinks were connected to the S-2 transmitter passband downlink via the matrix switch.

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

International Space Station/ARISS

Worldwide packet uplink: 145.990 MHz
Region 1 voice uplink: 145.200 MHz
Region 2/3 voice uplink: 144.490 MHz
Worldwide downlink: 145.800 MHz
TNC callsign NOCALL
ARISS initial station launched September 2000 aboard shuttle Atlantis

ARISS is made up of delegates from major national amateur radio organizations, including AMSAT.

Status: Operational.

The ISS packet station (normally) available for UI packets. The mailbox and keyboard are currently disabled. Please see the packet section of the ARISS web page before attempting to first work ISS on packet.

The ISS daily crew schedule (which gives an idea when crew members have free time and may be available for amateur radio operations) can be found at http://spaceflight.nasa.gov/station/timelines/2001/may/index.html

Miles, WF1F, has posted pictures of the new antenna system for ISS. View http://www.marex-na.org/fileshtml/galleryantenna.html for details.

U.S. callsign: NA1SS
Russian callsigns: RS0ISS, RZ3DZR

The QSL routes for stations working NA1SS aboard the International Space Station:

U.S stations: Margie Bourgoin KB1DCO
Attn: ARISS Expedition-1 (or 2 or 3) QSL
ARRL, 225 Main Street
Newington, Connecticut 06111
SASE required
Canadian stations: Radio Amateurs of Canada
Attn: ARISS Expedition-1 (or 2 or 3) QSL
720 Belfast Road, Suite 217
Ottawa, Ontario K1G 0Z5
European stations: AMSAT-France
16, rue de la Vallee
91360 Epinay sur Orge, France
SASE and 2 IRC's required

[ANS thanks Will Marchant, KC6ROL, and Jean-Louis Rault, F6AGR, for this information]

RS-12

Uplink 145.910 to 145.950 MHz CW/SSB
Downlink 29.410 to 29.450 MHz CW/SSB
Beacon 29.408 MHz
Robot 29.454 MHz (145.831 MHz uplink)
Launched February 5, 1991 aboard a Russian Cosmos C launcher

Status: RS-12 was re-activated in mode A on January 1, 2001

K5OE and VE5SWL report the RS-12 robot is operating.

The latest information on RS-12 and RS-13 can be found on the AC5DK RS-12/13 Satellite Operators page:

http://www.qsl.net/ac5dk/rs1213/rs1213.html

[ANS thanks Kevin Manzer, AC5DK, for RS-12 information]

RS-15

Uplink 145.858 to 145.898 MHz CW/SSB
Downlink 29.354 to 29.394 MHz CW/SSB
Beacon 29.352 MHz (intermittent)
SSB meeting frequency 29.380 MHz (unofficial)
Launched December 26, 1994 from the Baikonur Cosmodrome
Semi-operational, Mode A (2m uplink, 10m downlink)

Dave, WB6LLO, has operating information for both RS-15 and RS-13 on his personal web site. In addition to satellite data, antenna information for mode A operation is also featured. The WB6LLO web site URL is http://home.san.rr.com/doguimont/uploads

AO-10

Uplink 435.030 to 435.180 MHz CW/LSB
Downlink 145.975 to 145.825 MHz CW/USB
Beacon 145.810 MHz (unmodulated carrier)
Launched June 16, 1983 by an Ariane launcher from Kourou, French Guiana
Semi-operational.

DX continues to be heard and worked on AO-10. Jeff, KB2M, reports working Peter, I1PIK, via AO-10 recently.

Stacey Mills, W4SM, has more information about the satellite at http://www.cstone.net/~w4sm/AO-10.html

[ANS thanks Stacey Mills, W4SM, for his AO-10 status information and web site]

AO-27

Uplink 145.850 MHz FM
Downlink 436.795 MHz FM
Launched September 26, 1993 by an Ariane launcher from Kourou, French Guiana
Operational

Periodically, AO-27's analog repeater will be turned off for a few days at a time to enable ground controllers to gather Whole Orbital Data (WOD), to verify the health of the satellite.

An AO-27 question-and-answer page is available on the AMSAT-NA web site, with recent updates by Ray, W2RS: http://www.amsat.org/amsat/intro/ao27faq.html.

AO-27 uses a method called Timed Eclipse Power Regulation (TEPR) to regulate the on-board batteries. In simple terms, TEPR times how long the satellite has been in an eclipse (or in the sun) and decides what subsystems to turn on or off. The AO-27 pages on the AMSAT-NA web site include an explanation of TEPR AO-27 operations at http://www.amsat.org/amsat/sats/n7hpr/ao27.html

[ANS thanks AMRAD for AO-27 information]

UO-14

Uplink 145.975 MHz FM
Downlink 435.070 MHz FM
Launched January 22, 1990 by an Ariane launcher from Kourou, French Guiana
Operational.

Tim, KG8OC, features UO-14 information on the Michigan AMSAT web site, see http://www.qsl.net/kg8oc

Ray, W2RS, has revised the AO-27 FAQ on http://www.amsat.org/amsat/intro/ao27faq.html to include information on UO-14.

[ANS thanks Chris Jackson, G7UPN / ZL2TPO, for UO-14 information]

JAS-1b FO-20

Uplink 145.900 to 146.000 MHz CW/LSB
Downlink 435.800 to 435.900 MHz CW/USB
Launched February 7, 1990 by an H1 launcher from the Tanegashima Space Center in Japan
Operational.

FO-20 is in mode JA continuously.

Tak, JA2PKI, reported FO-20 control station operators believe that the UVC (Under Voltage Controller) now is regulating the transponder. The controller monitors battery voltage and tries to protect the batteries from over discharge.

[ANS thanks Kazu Sakamoto, JJ1WTK for the FO-20 status reports]

JAS-2 FO-29

Voice/CW Mode JA
Uplink 145.900 to 146.000 MHz CW/LSB
Downlink 435.800 to 435.900 MHz CW/USB
Digital Mode JD
Uplink 145.850, 145.870, 145.910 MHz FM
Downlink 435.910 MHz FM 9600 baud BPSK
Callsign 8J1JCS
Digi-talker Mode
Downlink 435.910 MHz FM
Launched August 17, 1996, by an H-2 launcher from the Tanegashima Space Center in Japan
Operational.

The JARL FO-29 command station has announced the following operation schedule of FO-29:

through December 3 JA

Mineo, JE9PEL, has updated his FO-29 satellite telemetry analysis program. The software will automatically analyze all digital telemetry from the satellite such as current, voltage and temperature. The JE9PEL FO-29/software update is available at http://www.ne.jp/asahi/hamradio/je9pel/

[ANS thanks Kazu Sakamoto, JJ1WTK, for the FO-29 status reports]

PCSat

Uplink/downlink 145.830 MHz 1200 baud AX-25 AFSK via PCSAT-1
Uplink 435.250 MHz 9600 baud via PCSAT-2
APRS Downlink 144.390 MHz (Region 2)
Launched: September 30, 2001 aboard an Athena-1 rocket from the
Kodiak Alaska Launch Complex.
Status: Operational

PCSat is in a low power mode. Bob, WB4APR, reports PCSat is in a higher than average eclipse period and the UHF 9600-baud receivers are off. "Limited operations can continue as long as the telemetry is showing 00111111," said WB4APR. Bob also noted that no ground stations should be using PCSat via the "safe mode" callsign of W3ADO-1.

The APRS-equipped PCSat was built by midshipmen from the U.S. Naval Academy under the guidance of Bob Bruninga, WB4APR. PCSat is a 1200-baud APRS digipeater designed for use by stations using hand-held or mobile transceivers. Downlinks feed a central web site http://pcsat.aprs.org.

For more information, visit the PCSat web site at http://web.usna.navy.mil/~bruninga/pcsat.html

[ANS thanks Bob Bruninga, WB4APR, for PCSat information]

TIUNGSAT-1

Uplink 145.850 or 145.925 MHz 9600 baud FSK
Downlink 437.325 MHz
Broadcast callsign: MYSAT3-11
BBS: MYSAT3-12
NUP: MYSAT3-10
Launched September 26, 2000 aboard a converted Soviet ballistic missile from the Baikonur Cosmodrome
Status: Operational at 38k4 baud FSK

Chris, G7UPN, tells ANS that TiungSat-1 has been operating at a data rate of 38k4. Data recovery at 38k4 is reported to be extremely good with efficiencies near 100%. The output power is at 8 watts "which should provide a very good downlink," said Chris, adding "the downside is that with the high power transmitter operating, the power budget is negative so we can't support continuous operation."

According to G7UPN, TiungSat-1 now requires the amateur radio station to switch the downlink 'on' when the satellite comes into range. The way this works is for the ground station software to send a request to the spacecraft to switch the downlink on. The spacecraft receives this request and checks the battery voltage to see if it can support the operation, and if it can it will activate the downlink.

TiungSat-1 is Malaysia's first micro-satellite and in addition to commercial land and weather imaging payloads will offer FM and FSK amateur radio communication.

TiungSat-1, named after the mynah bird of Malaysia, was developed as a collaborative effort between the Malaysian government and Surrey Satellite Technology Ltd.

UO-22

Uplink 145.900 or 145.975 MHz FM
Downlink 435.120 MHz FM 9600 Baud FSK
Broadcast callsign: UOSAT5-11
BBS: UOSAT5-12
Launched July 17, 1991 by an Ariane launcher from Kourou, French Guiana
Operational

Jim, AA7KC, reports UO-22 is operational with heavy Sat-gate traffic. Downlink efficiency is greater than 50%.

UoSAT command station G7UPN reports to ANS that UO-22 had been closed for amateur activity for a short duration while command stations assess the state of the RAM disk. Over the past few weeks there have been increasing difficulties downloading larger files from the spacecraft. The store and forward communications system has been reloaded.

More information on the satellite is available at http://www.sstl.co.uk/

[ANS thanks Chris Jackson, G7UPN/ZL2TPO, for UO-22 information and Jim Weisenberger, AA7KC, for status information]

OSCAR-11

Downlink 145.825 MHz FM, 1200 baud PSK
Beacon 2401.500 MHz
Launched March 1, 1994 by a Delta-Thor rocket from Vandenberg Air Force Base in California
Operational.

During the period 16-October to 17-November 2001 reliable signals have been received from the 145 MHz beacon. The internal temperatures have continued to increase as the solar eclipse times decrease. These temperatures are now 7.0C and 5.0C for battery and telemetry electronics respectively. Temperatures have been fairly static, indicating that the current eclipse cycle has reached a minimum value.

The battery voltage observed during daylight passes is unchanged. The average value observed was 14.0 with a range of 13.8 to 14.1 volts.

The rate at which the SEU counter increments has continued to increase from 417 to 479 counts per day. Decoding the SEU binary telemetry shows permanent memory failures at locations 3EC0 and 37B1. Frequent faults appear to be causing the increase in count rate.

The WOD survey of channels 1, 2, 3, 61 (X, Z, Y magnetometers and status) dated 16-August-2001 has been transmitted. This survey shows the spin period to be 368 seconds. The spin period has varied between 203 and 232 seconds.

The operating schedule is unchanged.

ASCII status (210 seconds)
ASCII bulletin (60 seconds)
BINARY SEU (30 seconds)
ASCII TLM (90 seconds)
ASCII WOD (120 seconds)
ASCII bulletin (60 seconds)
BINARY ENG (30 seconds)

The ASCII bulletin is currently a static message, detailing modes and frequencies of all the amateur radio satellites.

More information on OSCAR-11 is available at http://www.users.zetnet.co.uk/clivew/

[ANS thanks Clive Wallis, G3CWV, for OSCAR-11 status information]

AMSAT-OSCAR-16 (PACSAT)

Uplink 145.900, 145.920, 145.940, 145.860 MHz FM, 1200 bps Manchester FSK
Downlink 437.025 MHz SSB, 1200 bps RC-BPSK 1200 Baud PSK
Beacon 2401.1428 MHz.
Broadcast callsign: PACSAT-11
BBS: PACSAT-12
Launched January 22, 1990 by an Ariane launcher from Kourou, French Guiana
Semi-operational. Digipeater on.

Telemetry is as follows:

uptime is 656/18:20:42.  Time is Fri Nov 30 21:57:46 2001
+X (RX) Temp    -1.817 D  	RX Temp         12.705 D
Bat 1 V          1.225 V  	Bat 2 V          1.210 V
Bat 3 V          1.220 V  	Bat 4 V          1.247 V
Bat 5 V          1.225 V  	Bat 6 V          1.210 V
Bat 7 V          1.240 V  	Bat 8 V          1.252 V
Bat 1 Temp        9.075 D  	Bat 2 Temp       8.470 D
Baseplt Temp     8.470 D  	PSK TX RF Out    1.559 W
+Y Array Temp  -18.760 D  	PSK TX HPA Tmp   4.234 D
+10V Bus        10.400 V  	+Z Array Temp   -7.868 D
Total Array C= 0.000 Bat Ch Cur=-0.399 Ifb= 0.161 I+10V= 0.259
TX:1009 BCR:1E PWRC:36D BT:1E WC:25 EDAC:CC

A new WOD collection of current graphics along with general information and telemetry samples can be found at http://www.telecable.es/personales/ea1bcu

[ANS thanks Miguel A. Menendez, EA1BCU, for AO-16 status information.]

ITAMSAT IO-26

Uplink 145.875, 145.900, 145.925, 145.950 MHz FM
Downlink 435.822 MHz SSB, 1200 Baud PSK
Broadcast callsign: ITMSAT-11
BBS: ITMSAT-12
Launched September 26, 1993 by an Ariane launcher from Kourou, French Guiana
Semi-operational.

Digipeater function is on, open for APRS users.

[ANS thanks ITAMSAT Project Manager Alberto E. Zagni, I2KBD, for this information]

The following satellites are in orbit but are non-operational or semi-operational at this time:

KITSAT KO-23

Uplink 145.850, 145.900 MHz FM
Downlink 435.175 MHz FM, 9600 Baud FSK
Broadcast callsign: HL01-11
BBS: HL01-12
Launched August 10, 1992 by an Ariane launcher from Kourou, French Guiana
Status: Intermittent operation with the downlink transmitter operating at unpredictable intervals

Jim, AA7KC, reported that KO-23's downlink transmitter continues in non-operational status. Jim says that KO-23 shows some signs of trying to recover, but no useful data has been downlinked. The duration of this status is unpredictable. No data has been received since October 28.

[ANS thanks Jim Weisenberger, AA7KC, and KyungHee Kim, HL0ENJ, for KO-23 status information]

KO-25

Uplink 145.980 MHz FM
Downlink 436.500 MHz FM, 9600 Baud FSK
Broadcast callsign: HL02-11
BBS: HL02-12
Launched September 26, 1993 by an Ariane launcher from Kourou, French Guiana
Semi-operational.

Jim, AA7KC, reports KO-25 is marginally operational with very low downlink efficiency - under 3%. The lack of traffic and low downlink efficiency indicates a problem. In addition, KO-25's downlink transmitter power output seems low or intermittent.

[ANS thanks Jim Weisenberger, AA7KC, for this information]

UoSAT-12 UO-36

Uplink 145.960 MHz, 9600 baud FSK
Downlink 437.025, 437.400 MHz, 9600 baud FSK
Broadcast callsign: UO121-11
BBS: UO121-12
Launched April 21, 1999 by a Russian launcher from the Baikonur Cosmodrome
Status: Operational

UO-36 carries a number of imaging payloads, digital store-and-forward communications and mode L/S transponders.

Paul, KB2SHU, tells ANS that UO-36 has not been operational (over North America) since late July. In addition, Sangat, 9M2SS, reports he has not copied UO-36 since July 30th.

The VK5HI viewer shareware for UO-36 is available on the AMSAT-NA web site at ftp://ftp.amsat.org/amsat/software/win32/display/ccddsp97-119.zip

Further information on UO-36 is available from: http://www.sstl.co.uk/

[ANS thanks Chris G7UPN/ZL2TPO, and the University of Surrey, for this information]

TMSAT-1 TO-31

Uplink 145.925 MHz 9600 baud FSK
Downlink 436.925 MHz 9600 baud FSK
Broadcast callsign: TMSAT1-11
BBS: TMSAT1-12
Launched July 10, 1998 by a Zenit rocket from the Baikonur Cosmodrome
Status: Non-operational, no data downlinked since December 18, 2000

Chris G7UPN, (UoSAT operations manager) reports the following to ANS:

The TO-31 downlink will be off over most areas, with the exception of Europe and Thailand. This is required to allow control stations to recondition the battery with minimum power drain.

ProcMail V2.00G has been released by G7UPN. This software permits the processing of image files from TO-31. It has been posted to the AMSAT-NA FTP site at http://www.amsat.org/amsat/software/win32/wisp

Many of the high-resolution color images transmitted by TMSAT are compressed using a UoSAT compression format. This format is supported by the VK5HI CCD display program.

[ANS thanks Chris Jackson, G7UPN/ZL2TPO, for TO-31 status information]

LUSAT-OSCAR-19

Uplink 145.840, 145.860, 145.880, 145.900 MHz 1200 bps Manchester FSK
Downlink 437.150 MHz SSB, 1200 bps RC-BPSK
CW Downlink 437.125 MHz
Broadcast callsign: LUSAT-11
BBS: LUSAT-12
Launched January 22, 1990 by an Ariane launcher from Kourou, French Guiana
Semi-operational.

The CW beacon is sending eight telemetry channels and one status channel on 437.126 MHz. No BBS service is available. The digipeater is not active.

Telemetry is as follows:

Time is Fri Nov 30 21:03:00 2001 Orb-61900
CW-Code: ava abv aab ad6 atd abv ttu aee
5V-reg.:   	4.85 V      	8.5V-reg:   8.68 V
10V-Bat:	11.07 V      	10V-Curr:  121.1 mA
TX-Pwr :  	0.967 W      	TX-Temp.:   6.27 ?C
+Z-Sol.:   	0.30 V      	Box-Temp:   9.97 ?C
CW-Code: avt abv aan ad6 aat abu ttu aee
5V-reg.:   	4.89 V      	8.5V-reg:   	8.68 V
10V-Bat:  	11.07 V      	10V-Curr:  	120.4 mA
TX-Pwr :  	0.967 W      	TX-Temp.:   	5.56 ?C
+Z-Sol.:   	0.30 V      	Box-Temp:   	9.26 ?C
CW-Code: avt abu aua ade aaa abu ttu aee
5V-reg.:   	4.89 V      	8.5V-reg:   	8.68 V
10V-Bat:  	11.01 V      	10V-Curr:  	120.4 mA
TX-Pwr :  	0.957 W      	TX-Temp.:   	4.85 ?C
+Z-Sol.:   	0.30 V      	Box-Temp:   	8.90 ?C

General information and telemetry samples can be found at http://www.telecable.es/personales/ea1bcu

[ANS thanks Miguel A. Menendez, EA1BCU, for LO-19 status information.]

SO-41 SAUDISAT-1A

Uplink to be released
Downlink 437.075 MHz
Launched September 26, 2000 aboard a converted Soviet ballistic missile from the Baikonur Cosmodrome
Status: Unknown, this satellite has been in orbit for almost eight months. ANS has received no additional information.

When/if operational, SaudiSat-1A will operate as 9600-baud digital store-and-forward systems as well analog FM repeater mode capability. One of two new ham satellites from the Kingdom of Saudi Arabia built by the Space Research Institute at the King Abdulaziz City for Science and Technology.

SO-42 SAUDISAT-1B

Uplink to be released
Downlink 436.775 MHz
Launched September 26, 2000 aboard a converted Soviet ballistic missile from the Baikonur Cosmodrome
Status: Unknown, this satellite has been in orbit for almost eight months. ANS has received no additional information.

When/if operational, SaudiSat-1B will operate as 9600-baud digital store-and-forward systems as well analog FM repeater mode capability. One of two new ham satellites from the Kingdom of Saudi Arabia built by the Space Research Institute at the King Abdulaziz City for Science and Technology.

SunSat SO-35

Mode J uplink 145.825 MHz FM
Mode J downlink 436.250 MHz FM

Mode B uplink 436.291 MHz FM
Mode B downlink 145.825 MHz FM

Launched February 23, 1999 by a Delta II rocket from Vandenberg Air Force Base in California
Status: Non-operational

The SunSat team released the following statement, dated February 1, 2001:

We regret to announce that the last communication with SunSat from our ground station at the Electronic Systems Laboratory at Stellenbosch University took place recently. We are certain, after having performed several tests since the last contact, that an irreversible, physical failure has occurred on the satellite. It is therefore unlikely that we will have any further contact with SunSat, apart from the occasional visual sighting by telescope!

When it was operational the SunSat package included 1200 and 9600 baud digital store-and-forward capability and a voice 'parrot' repeater system in addition to Mode B/J operation with two VHF and two UHF transmit-receive systems.

For more information on SunSat, visit http://sunsat.ee.sun.ac.za/

[ANS thanks Garth Milne ZR1AFH, for this information]

RS-13

Uplink 21.260 to 21.300 MHz CW/SSB
Downlink 145.860 to 145.900 MHz CW/SSB
Beacon 145.860 MHz
Launched February 5, 1991 aboard a Russian Cosmos C launcher

Status: non-operational (last operational in mode-T)

RS-12 was re-activated recently. Prior to this switch RS-13 was operational (mode T), but was apparently turned off following the recent RS-12 switch.

The latest information on RS-12 and RS-13 can be found on the AC5DK RS-12/13 Satellite Operators page at http://www.qsl.net/ac5dk/rs1213/rs1213.html

[ANS thanks Kevin Manzer, AC5DK, for this information]

TechSat-1B GO-32

Downlink 435.225 MHz, HDLC telemetry
Launched July 10, 1998 by a Russian Zenit rocket from the Baikonur Cosmodrome
Semi-operational.

Efforts were reported to be underway to bring GO-32 on line, however no additional information has been received by ANS (the last report was dated November 1999).

Last reported, the satellite does transmit a 9600-baud burst every 30 seconds (the GO-32 beacon sends one short telemetry status transmission of 44 bytes) and upon request the complete telemetry buffer.

ANS has no further information.

PANSAT PO-34

Uplink/downlink frequency (listed on the PanSat web site) 436.500 MHz
Launched October 30, 1998 by the Shuttle Discovery
Status: unknown

The satellite is not available for general uplink transmissions.

The Naval Postgraduate School developed PanSat. At the time of launch, PanSat spread-spectrum digital transponders were to be available to amateur radio operators along with software to utilize this technology.

For more information, visit the official PANSAT web site at:

http://www.sp.nps.navy.mil/pansat/

PanSat was the featured cover article in the July/August 1999 issue of the AMSAT-NA Journal (written by KD6DRA and N7HPR).

ANS has no further information.

DO-17 (DOVE)

Downlink 145.825 MHz FM, 1200 Baud AFSK
Beacon 2401.220 MHz
Launched January 22, 1990 by an Ariane launcher from Kourou, French Guiana
Non-operational.

DOVE stopped transmitting in March 1998. The 145.825 MHz and 2401.220 MHz downlinks are off the air and the satellite has not responded to ground station control.

ANS has no further information.

WEBERSAT (WO-18)

Downlink 437.104 MHz SSB, 1200 Baud PSK AX.25
Launched January 22, 1990 by an Ariane launcher from Kourou, French Guiana
Non-operational.

WO-18 has been in orbit for 11 years.

WO-18 was last reported to be in MBL mode after a software crash.

ANS has no further information.

SEDSAT SO-33

Downlink 437.910 MHz FM 9600 Baud FSK
Launched October 24, 1998 by a Delta 2 rocket from Cape Canaveral in Florida
Semi-operational.

The satellite is not currently available for uplink transmissions and image and transponder recovery efforts have been unsuccessful.

SEDSAT-1 signifies Students for the Exploration and Development of Space (satellite number one).

SedSat-1 has downlinked months worth of telemetry data on the performance of its electrical power system parameters. The Nickel Metal Hydride batteries on the spacecraft were experimental and experienced some abuse due to a power negative situation. This information has provided NASA with useful information. With the exception of the imaging system and the use of the transponders, SedSat-1 has been judged a success.

For more information on SedSat-1 visit the satellite web site at http://www.seds.org/sedsat

ANS has no further information.


ANS would like to thank Mike Seguin, N1JEZ, ANS principal satellite investigator, for helping provide current satellite information for ANS.

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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