AMSAT-NA AMSAT News Service

January 7, 2001

Latest Bulletins
Last Week's Bulletins
2001 Bulletins
These Bulletins in plain text format
Subscribe to bulletins by e-mail
Submit your News for ANS


Phase 3D/AO-40 Update

AMSAT-DL Vice President Peter Guelzow, DB2OS, provided ANS with the latest information about AMSAT OSCAR 40:

Dear All,

I know that many people are looking for more information and I can understand this, but please keep in mind that the recovery efforts are not easy and take a lot of time. Everyone involved in the recovery is indeed very busy and we all have our full time jobs and our families to consider in addition to the recovery efforts.

Due to the currently limited downlink capabilities, uploading of new commands and analyzing the results takes some time. So far, it has been determined that the L-band uplink receiver (on a high-gain antenna) is OK. Also, the VHF and UHF uplink receivers are OK and they seem to be working nominally. Since we know that the high-gain antennas are working, the V-band transmitter was switched 'on' for 1 MA count recently during a perigee pass over Australia (by command-station Graham Ratcliff, VK5AGR). Telemetry indicated a temperature rise but Graham could not detect any AO-40 telemetry signal on 2 meters. Unfortunately, the telemetry Gram was receiving on S-band at the time of this test was not error free and therefore some telemetry might be missing. The V-TX clearly needs to be tested again in the next few orbits.

Magnetorquing did commence and the results will be analyzed. Because of this action some additional FM wobbling may be noted on the S-band downlink when the magnetorquers are in action. If successful, the magnetorquing attitude control system will allow us to spin 'down' the spacecraft and adjust the attitude for a better sun and squint angle. Following this, it will take some time to evaluate the status of the various other systems and experiments, including the arcjet and momentum wheels.

However, there is a sign of a small leak, which we believe is also the reason for the higher spin rate we are seeing. The internal pressures of the propellant tanks are measured by discrete pressure transducers which are part of the PFA module. While the transducers could be damaged, it seems to be very unlikely. So for now the reason for the leak and the possible effects are under investigation and results will be reported when a final conclusion is made.

At the moment we clearly have priorities and the most important one is to bring AO-40 back into 'normal' mode as soon as possible. Depending on the outcome of these tests we can devise a new schedule that best exploits our currently known communications capability.

73, Peter, DB2OS

Following Peter's report, AMSAT-DL President Karl Meinzer, DJ4ZC, provided the following:

Greetings,

Since my report from late December, command stations have implemented the strategy which I had outlined. The first priority was to determine which command-uplink channels were available. This work was difficult, very time consuming (and for the satellite) somewhat dangerous due to the unknowns. The command stations did a magnificent job! Due to their combined efforts I can report the following findings:

1. After some blind transmissions to test the omni-antennas around apogee (that failed to produce a response), the scheduler was activated and programmed in such a way as to prevent lock-out. This strategy turned out to be very prudent and the scheduler-operation went smoothly and resulted in no additional anomalies.

2. The scheduler then took AO-40 through a number of modes, which allowed the P3D team to determine the following:

a. V, U and L-1 receivers work
b. V, U and L high-gain antennas work
c. U and L low-gain antennas do not work
d. the status of the V-band low-gain antenna has not been finally determined. Apogee blinds tests are in progress as I write this to accurately determine the status of this antenna

3. As Peter noted the V-band transmitter was operated for one MA-unit. It demonstrated a marked temperature increase, but no signal was heard. This was a quick-look test and this result should not be considered final. Further tests will be necessary (including the need to determine if the matrix was set properly). These tests will have to wait until the spin rate is reduced to ensure that the satellites heat-pipes will be able to handle the dissipation for extended periods.

4. Magnetorquing was started to reduce spin and the first indications are a loss of around 0.5 rpm - roughly consistent with theoretical predictions. We can conclude that the system works. In order to use Earth-sensing data, a small additional program needs to be installed which stores data at apogee for later recovery when telemetry reception becomes available.

What's next?

During the next days the attitude control system should be returned to full functionality. It will be used to reduce the spin to a value consistent with heat-pipe operation and also with the requirements to change attitude. These changes are necessary for sun-angle constraints, communication access and also to reduce the effect of our ongoing mass-loss on perigee altitude. Newer model calculations show that the mass loss could be larger than my previous estimates; thus it would be prudent to use the resulting thrust to increase perigee altitude (right now it is decreasing it).

Once the spin/attitude situation is under control, we will continue the check-out of other systems (such as):

1. Determine the status of the V-band transmitter (controlled experiments)
2. Determine the status of the U-band transmitter
3. Determine the serviceability of the ATOS (arcjet) to determine if it can be planned on for a strategy toward an improved orbit
4. Test the momentum wheels to determine if AO-40 can be put into a three-axis mode which would greatly reduce the impact of the loss of the omni-antennas

Present data so far indicates that although we have lost some systems in AO-40, there has been no further deterioration after the second incident. In particular, if ATOS and three-axis stabilization are still serviceable, AO-40 will still be able to produce a large fraction of the amateur radio service expected from it.

Personally, I am optimistic and I believe that the command and engineering team stand a good chance of turning AO-40 into an extremely useful amateur radio satellite.

73, Dr. Karl Meinzer, DJ4ZC

AO-40 command-station operator Stacey Mills, W4SM, has done a long-term calculation of AO-40's current orbit in the unlikely event that a malfunction within AO-40's propulsion system means that no further orbital maneuvers could take place. W4SM calculates the current orbit will be stable for a very long period.

Both the W4SM orbit calculation and the measured AO-40 beacon frequencies (during RF testing in Kourou) have been posted to the AMSAT-DL web site. See http://www.amsat-dl.org/journal/adlj-p3d.htm

Stay tuned to ANS, the official source of information on AMSAT OSCAR 40.

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

Latest ARISS School Contact Successful

The ARRL is reporting that the second ARISS school contact with Space Station Alpha was successful as students at the Armstrong Fundamental Elementary School in Hampton, Virginia, recently made contact with ISS. Students interviewed station commander William Shepherd, KD5GSL, last Friday.

During the afternoon contact about 10 students posed questions to Shepherd, who identified using the special NA1SS call sign. The League reported that the students seemed fascinated with the effects of launch and space flight. Being launched from Earth into space felt like "someone standing on your chest," Shepherd told the students, but after about eight minutes or so "you become weightless and can go anywhere you want." Shepherd told the students that being weightless was "a very nice experience." He also told the Armstrong students that keeping food down in a zero-gravity environment was not a problem.

Students at Jan Sheldon Elementary School in Varysburg, New York, are next in line and hope to complete their ARISS contact in mid-January.

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

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

[ANS thanks the ARISS team and the ARRL for this information]

AMSAT-NA Membership Drive

AMSAT North America is looking for members, both new satellite enthusiasts and former members who have re-activated their interests.

AMSAT NA, the Radio Amateur Satellite Corporation, is part 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.

To help in attracting members, AMSAT member Mike Honer, W1BFN, has challenged his fellow satellite enthusiasts. Mike will match (up to $1,000) any amount earmarked for a new or lapsed membership received during the month of January! These matching funds will be used by AMSAT-NA to further advance both current and future projects. Simply mark the membership application with 'MH' at the bottom of the application.

Membership in AMSAT-NA also includes the AMSAT Journal. The January/February issue will include the following featured articles:

Need more details on joining AMSAT-NA? Contact Martha, the AMSAT Office Manager, at +1(301) 589-6062, or by e-mail at martha@amsat.org.

Now is the time to show your support of AMSAT-NA!

Information on AMSAT-NA is available at http://www.amsat.org or from:

AMSAT-NA
850 Sligo Avenue, Suite 600
Silver Spring, MD 20910-4703

Voice: +1(301)589-6062
FAX: +1(301)608-3410

[ANS thanks Mike Honer, W1BFN, for his generosity and dedication to AMSAT]

ANS in Brief

ANS news in brief this week includes the following:

Weekly Satellite Report

ISS . Mir . 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

Phase 3D / AMSAT-OSCAR 40 / AO-40

V-band Beacon 145.898 MHz
S-Band transmitters: operational at certain times
Launched: November 16, 2000 aboard an Ariane 5 launcher from Kourou, French Guiana. A 50-second video of the launch can be seen at: http://arianespace.com/interior/v135better.mov
Status: S-Band transmitter is active, recovery efforts continue

So far, it has been determined that the L-band and U-band uplink receivers (both on high-gain antennas) seem to be OK. Also, the VHF and UHF uplink receivers are OK and they seem to be working nominally. Magnetorquing is underway and the results will be analyzed.

[ANS thanks AMSAT-NA and AMSAT-DL 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 RZ3DZR
ARISS initial station launched September 2000 aboard shuttle Atlantis
Status: Operational (although current ISS workload is limiting operation)

The ISS contact with the Armstrong Fundamental School in Hampton, Virginia was successful.

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

U.S. callsign: NA1SS (NN1SS will be used for ground-based transmissions from the Goddard Space Flight Center)
Russian callsign: RZ3DZR
German call sign: DL0ISS

RZ3DZR-1 is also the callsign entered into the TNC currently onboard Alpha.

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

[ANS thanks ARISS team member Will Marchant, KC6ROL, 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
Launched February 5, 1991 aboard a Russian Cosmos C launcher

Status: Re-activated January 2001 in mode A

RS-12 was apparently re-activated in mode A on January 1, 2001 (prior to this switch RS-13 was operational (mode T), but was apparently turned off following the recent RS-12 switch).

Kevin, AC5DK, told ANS "when the command stations for RS-12/13 start changing modes, they often will change it several times over a short period of time before settling on one mode for awhile."

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 this 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 worked (and heard) on AO-10. John, K6YK, reports very good recent activity including FO5QS, VK2APG, ZL2TWS, DU1EV, 7M4DUI, XE1KK, JE2UAZ, HP2CWB, LU4HE, PY3BZM, LU6KK, LU4EBC, PY2FUS, ZL2VBV, ZL2TAL, LW4DIR, ZL2VAL, ZL2MN, 7K2PMJ, JN1GKZ, XE2AT, ZL2ALP and CU3AN.

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: 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 current TEPR settings (as of November 25, 2000) are:

TEPR 4: 18
TEPR 5: 36

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, has updated the Michigan AMSAT Information site to include UO-14 information, see http://www.qsl.net/kg8oc

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

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 in the amateur radio service

The SunSat web page contains the following:

The orientation changes needed in order to resume imaging activities have been hampered by ground station problems. Due to the additional operational effort required, amateur radio services have been suspended until further notice.

The SunSat package includes 1200 and 9600 baud digital store-and-forward capability and a voice 'parrot' repeater system that will be used primarily for educational demonstrations in addition to Mode J operation. The satellite has two VHF and two UHF transmit-receive systems.

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

A summary of the active modes and frequency allocations for SunSat is available at http://esl.ee.sun.ac.za/~lochner/sunsat/modes.html

[ANS thanks Garth Milne ZR1AFH, for this 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 the FO-20 control station operators believe that the UVC (Under Voltage Controller) now is regulating the transponder. The UVC monitors battery voltage and tries to protect the batteries from over discharge. Tak notes that FO-20, launched in 1990, is now over 10 years old.

[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

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

Dec 25 - Jan 31 JA

Mike, KF4FDJ, has put together a very informative document on FO-29, addressing analog, digital and digi-talker modes. To obtain a copy e-mail Mike at kf4fdj@amsat.org

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]

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: Commissioning stage, initial housekeeping tasks underway

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: Commissioning stage, initial housekeeping tasks underway

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.

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 in digital mode, currently at 9600 baud FSK

Chris, G7UPN, tells ANS that recently, 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.

For more information on TiungSat-1, see http://www.yellowpages.com.my/tiungsat/tiung_main.htm

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
Operational.

Jim, AA7KC, reports KO-25 operational with moderate traffic.

[ANS thanks Jim Weisenberger, AA7KC, for KO-25 status information]

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 nominal UO-22 operation with heavy individual station and Satgate traffic.

More information on the satellite is available at http://www.ee.surrey.ac.uk/EE/CSER/UOSAT/

[ANS thanks Chris Jackson, G7UPN/ZL2TPO for UO-22 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.

OSCAR-11 celebrated its sixteenth birthday on March 1, 2000.

The G3CWV OSCAR-11 report for December shows "once again it's been an uneventful month for OSCAR-11. Good signals have been received from the 145 MHz beacon and the satellite is experiencing good solar conditions that should continue until the end of the year."

The battery voltage observed during daylight passes is unchanged with the average value observed at 14.0, with a range of 13.9 to 14.1 volts. Internal temperatures have now started to decrease slightly as the eclipse periods start to lengthen. The spin period has varied between 218 and 299 seconds. Seven positive magnetorquer correction pulses and zero negative pulses have been counted and there have been 281 Z-axis correction pulses.

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]

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. No BBS service is available. The digipeater is not active.

Telemetry (limited) is as follows:

Sat Dec 30 at 23:25 2000 UTC
LUSAT HIHI 60 AVT ABV AA6 ADB ATB AB4 TTU AEE

Mineo, JE9PEL, has recorded LO-19 CW and PSK telemetry and placed the information on his Internet homepage site at http://www.ne.jp/asahi/hamradio/je9pel/

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

[ANS thanks Miguel A. Menendez, EA1BCU, for this report.]

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.

Russ, WJ9F, reported he has been doing some WOD (Whole Orbit Data) collections recently and has had the S-band transmitter on during some passes. Russ has a software update planned that may allow (hopefully) continuous S-band operation.

Telemetry is as follows:

uptime is 321/19:21:26	Time is Sat Dec 30 22:56:34 2000
+10V Bus        10.450 V  	PSK TX RF Out    1.631 W
+X (RX) Temp     1.814 D  	RX Temp         15.731 D
Bat 1 V          1.252 V  	Bat 2 V          1.257 V
Bat 3 V          1.270 V  	Bat 4 V          1.241 V
Bat 5 V          1.263 V  	Bat 6 V          1.292 V
Bat 7 V          1.262 V  	Bat 8 V          1.272 V
BCR Load Cur     0.413 A  	BCR Input Cur    0.186 A
BCR Output Cur   0.015 A 	Bat 1 Temp       9.075 D
Bat 2 Temp       9.075 D  	Baseplt Temp     8.470 D
RC PSK BP Temp   1.209 D  	RC PSK HPA Tmp   1.814 D
+Y Array Temp  -13.919 D  	PSK TX HPA Tmp   5.444 D
+Z Array Temp   -1.817 D
Total Array C= 0.000 Bat Ch Cur=-0.398 Ifb= 0.186 I+10V= 0.227
TX:1009 BCR:1E PWRC:36D BT:1E WC:25 EDAC:5B

Beacon text:
AO-16 S-Band Tx testing to begin shortly
Pacsat owned and operated by AMSAT-NA
AO-16 Command Team <WJ9F>

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.]

TMSAT-1 TO-31

Uplink 145.925 MHz 9600 baud FSK
Downlink 436.925 MHz 9600 baud FSK
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:

Over the next few days - or possibly couple of weeks - 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. I am trying to get this moving as quickly as possible however with Christmas holidays it may take slightly longer than normal.

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 this report]

UoSAT-12 UO-36

Uplink 145.960 MHz, 9600 baud FSK
Downlink 437.025, 437.400 MHz, 9600 baud FSK
Broadcast callsign: UOSAT12-11
BBS: UOSAT12-12
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.

NASA has demonstrated on UO-36 the ability to use standard Internet protocols to communicate with an orbiting spacecraft (just like any node on the Internet). NASA has been developing this project by working with the commercial payload aboard UoSAT-12.

The BBS is open, although uploading and downloading may be disabled at times.

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]

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 at this time:

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 apparently 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]

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, reports 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, 2000.

KyungHee Kim, HL0ENJ, reports (from the KO-23 control team) that part of the problem with non-operation has been the power budget aboard the satellite. "We are not sure when the bird might turn off again due to insufficient power. The capability of the onboard power system has been less and less," said Kim. HL0ENJ also noted that as of October 30, 2000 the onboard computer was reset and a reboot of operational software is now underway.

[ANS thanks Jim Weisenberger, AA7KC, and KyungHee Kim, HL0ENJ, for KO-23 status 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 frequencies have never been released.
Launched October 30, 1998 by the Shuttle Discovery
Status: unknown

The satellite is not currently available for general uplink transmissions.

PanSat was developed by the Naval Postgraduate School. At the time of launch, PanSat spread-spectrum digital transponders were promised to be available to amateur radio operators along with software to utilize this technology. To date, this has not happened.

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.

Mir Space Station

145.985 MHz simplex FM voice and SSTV (Robot 36 mode)
Launched February 18, 1986
Unmanned.

MIR SAFEX II 70-cm Repeater
Uplink 435.750 MHz FM w/subaudible tone 141.3 Hz
Downlink 437.950 MHz FM
Not operational. No operation in 1999 or 2000 has been observed.

MIR SAFEX II 70-cm QSO Mode
Uplink 435.725 MHz FM w/subaudible tone 151.4 Hz
Downlink 437.925 MHz FM
Not operational. No operation in 1999 or 2000 has been observed.

Currently, there is no human habitation aboard the station and the amateur radio equipment has been turned off. Several news agencies have reported that Mir in now on 'autopilot'.

Several news agencies are reporting the Mir space station will be ditched this coming February in a controlled descent that will send it hurtling into a remote area of the Pacific Ocean.

Stay tuned to ANS for further details.

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 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.

Return to top


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

AMSAT Top