AMSAT-NA AMSAT News Service

August 23, 1998

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TMSAT-1 Doing Well

Chris Jackson, G7UPN reports the commissioning plan of TMSAT-1 (TO-31) is proceeding very well and the command team is currently testing the imaging system aboard the spacecraft. TMSAT has five cameras on board -- a wide-angle camera (WAC) similar to UO-22, three narrow angle cameras (with a pixel resolution of approximately 100m and an image size of 1020x1020 pixels), and a video camera which will be used for taking still images.

G7UPN reports they have taken five images so far. The first was a test over India under manual control from Bangkok, and the other images have been taken automatically under control of the on board computer.

Jackson initially targeted the Red Sea area, "it is generally free of cloud formations, which is useful for sensor calibration", said G7UPN. "For the first few images we only used the WAC, and also took the first set of images using the narrow angle cameras (NAC) over Greece. Due to the size of the images this took some time to download, along with other housekeeping and commissioning functions that were scheduled."

Jackson has uploaded two of the WAC images to the TMSAT web site. One is the first image over the Red Sea, "this was actually under exposed and has been enhanced", Jackson said. "The Nile valley can clearly be seen as can the Delta area and the different sands in the deserts of Egypt and Saudi Arabia." The other image was taken over southern Greece and the Mediterranean Sea. To view these images, point your browser to the following URL:

http://www.ee.surrey.ac.uk/CSER/UOSAT/amateur/tmsat/index.html

The TMSAT-1 micro-satellite was successfully launched from the Russian Baikonur Cosmodrome on July 10, 1998.

[ANS thanks Chris Jackson, G7UPN for this information]

Early Bird Registration

Russ, K5NRK tells ANS a registration prize is available for those "early birds" that register soon for the upcoming AMSAT-NA 16th Annual Meeting and Space Symposium to be held October 16-18, 1998 in Vicksburg, Mississippi.

To be eligible, a participant must register by September 15, 1998.

Harrah's Hotel and Casino, located in downtown Vicksburg, has donated a gift certificate for one free night's stay for two persons which can be used to pay for part of the stay while attending the symposium. For additional details on Harrah's Vicksburg Hotel see their web site at:

http://www.harrahs.com/tour/tour_vicksburg.html

Registration information and forms are available in the July/August issue of The AMSAT-NA Journal. They are also available at the following web site:

http://pages.prodigy.com/DXHF93A/

The early bird prize will be drawn on September 21st. The winner will be announced via an ANS bulletin. Additional details on the drawing or the symposium can be obtained by contacting Russ Tillman, K5NRK at the following e-mail address:

k5nrk@amsat.org

[ANS thanks Russ Tillman, K5NRK for this information]

ANS in Brief

ANS news in brief this week includes the following:

Weekly Satellite Report

Mir . RS-12 . RS-15 . RS-16 . AO-10 . AO-27 . FO-20 . FO-29 . KO-23 . KO-25 . UO-11 . AO-16 . DO-17 . WO-18 . LO-19 . UO-22 . IO-26 . TMSAT . TechSat-1B

Mir

SAFEX II 70cm Repeater
Uplink 435.750 MHz FM with subaudible tone 141.3 Hz
Downlink 437.950 MHz FM
Semi-operational

The Mir/SAFEX repeater has been active recently. It appears that the repeater is not available on every orbit, but is being switched on and off at random.

SAFEX II 70cm QSO Mode
Uplink 435.725 MHz FM with subaudible tone 151.4 Hz
Downlink 437.925 MHz FM
Semi-operational.
 
Packet Radio PMS
Uplink/Downlink 145.985 MHz FM, 1200 baud AFSK
Operational.

The PBBS is running a Kantronics KPC-9612 + V.8.1 TNC. The commands are similar to most PBBS and BBS systems.

MIREX has announced an on going APRS School Days Test. MIREX is allowing schools to use APRS for position and status reports via R0MIR. Non-school stations are asked to refrain from using APRS type transmissions or beacons via R0MIR.

[ANS thanks Scott Avery, WA6LIE, and the MIREX team for Mir status information]

RS-12

Uplink 145.910 to 145.950 MHz CW/SSB
Uplink 21.210 to 21.250 MHz CW/SSB
Downlink 29.410 to 29.450 MHz CW/SSB
Downlink 145.910 to 145.950 MHz CW/SSB
Beacon 29.408 MHz
Robot Uplink 21.129 MHz, Downlink 29.454 MHz
Operational, mode KA.

RS-12 continues to be the most popular of the current RS 'easy sat' series.

Rusty, NM1K reports working the following DX stations recently: XE2YVW, EB8BTV, CY9AOE, TF3TK, XE1EWC and D44BS.

RS-15

Uplink 145.858 to 145.898 MHz CW/SSB
Downlink 29.354 to 29.394 MHz CW/SSB
Semi-operational.

The RS-15 TLM beacon has apparently started working again, although intermittently.

RS-16

The 435 MHz beacon (only) is operational. Attempts to command the Mode A transponder on have been unsuccessful.

AO-10

Uplink 435.030 to 435.180 MHz CW/LSB
Downlink 145.975 to 145.825 MHz CW/USB
Semi-operational.

Stacey Mills, W4SM reports another sleep phase appears to be beginning. "I suspect that the rotational speed is so slow as to be incapable of holding a stable attitude heading. Hence, we may be entering a time of chaotic useful periods and sleep periods which cannot be predicted.

Stacey Mills, W4SM, has more information about the satellite at the following URL:

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: 436.792 MHz FM
Operational.

AO-27 TEPR States are currently:
4 = 36 = 18 Minutes
5 = 72 = 36 Minutes

This means AO-27's transmitter turns on 18 minutes after entering the Sun and stays on for 18 minutes. AO-27's transmitter is turned off at all other times during the orbit. N4USI reminds stations that this happens on every orbit, approximately 14.2 times a day. The current TEPR settings will cause the satellite to be on during the daytime at northern latitudes.

[ANS thanks Michael Wyrick, N4USI, AO-27 Control-op for this update]

FO-20

Uplink 145.900 to 146.000 MHz CW/LSB
Downlink 435.800 to 435.900 MHz CW/USB
Operational.

FO-20 in mode JA continuously.

John, G7HIA reports good signals over Europe, working DC3ZB on a recent pass. Gary, N9UUR also reports good signals, recently copying K9SB, W8JOM, WB4FWQ, VE3NPC and others in the satellite pass-band.

[ANS thanks Kazu Sakamoto, JJ1WTK and the Hawaiian amateurs for the FO-20 reports]

FO-29

Voice/CW Mode JA
Uplink 145.900 to 146.000 MHz CW/LSB
Downlink 435.800 to 435.900 MHz CW/USB
Operational.
 
Digital Mode JD
Uplink 145.850, 145.870, 145.910 MHz FM
Downlink 435.910 MHz FM 9600 baud BPSK
Not operational, the satellite is in JA (voice) mode.

Kazu, JJ1WTK, tells ANS that OBC bit error investigation continues. The JARL command recently issued two statements:

1) FO-29 will be stay still in mode JA because the frequency investigation of the OBC bit errors. The command team would like reports from radio amateurs who can receive the value of TLM channel 5. The information is the fifth item after HI HI on CW. The normal value of channel 5 is '00'.

Reports should be sent to lab@jarl.or.jp

2) FO-29 will be in 'full illumination' (always illuminated from the Sun) starting in mid-August. The operation mode may be changed in part due to anticipated temperature rise of the satellite.

A new statement will be released from the JARL shortly.

[ANS thanks Kazu Sakamoto, JJ1WTK, for this report.]

KO-23

Uplink 145.850, 145.900 MHz FM
Downlink 435.175 MHz FM, 9600 Baud FSK
Currently semi-operational.

Kyung-Hee Kim, HL0ENJ, from the KO-23 satellite command station, reports the downlink transmitter somehow "tripped" and went off the air on August 18th. HL0ENJ returned KO-23 to service August 20th. The reason for the problem is not known at this time. HL0ENJ is asking that any stations who received KO-23 telemetry data between the 18th and 20th please send that information to him at the following e-mail address: khkim@satrec.kaist.ac.kr

[ANS thanks Kyung-Hee Kim, HL0ENJ for this report]

KO-25

Uplink 145.980 MHz FM
Downlink 436.500 MHz FM, 9600 Baud FSK
Operational.

The telemetry is nominal.

[ANS thanks Jim Weisenberger, AA7KC for this report]

OSCAR-11

Downlink 145.825 MHz FM, 1200 baud PSK
Beacon 2401.500 MHz
Operational.

During the period July 14th to August 15th reasonable signals have been received from the 145.826 MHz beacon. Telemetry has been nominal. The battery voltage has slightly improved, averaging 13.7 volts, with values ranging from 13.4 to 13.9 observed.

The internal temperatures have slightly increased and are now 3.4C and 1.8C for battery and telemetry electronics respectively.

A single WOD survey, of channels 1, 2, 3, 61 (magnetometers) dated 01-July-1998, starting at 16:24:09 UTC has been transmitted. This was started at the same time the attitude pulse counters were reset to correct the counter overflow problem mentioned in the last report. It shows the unusually high spin period of 640 seconds.

Reports of the OSCAR-11 mode-S beacon reception have been received from K4SNF, N1JEZ and OH2AVE.

The operating schedule is unchanged.

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

In response to many requests for information about methods of decoding OSCAR-11 signals, a package of hardware information has been added to the satellite web site. The site also contains some software for capturing data, decoding ASCII telemetry and WOD information. The URL is http://www.users.zetnet.co.uk/clivew/

Beacon reception reports should be sent to: g3cwv@amsat.org

[ANS thanks Clive Wallis, G3CWV, for this information.]

AMSAT-OSCAR-16 (PACSAT)

Uplink 145.900, 145.920, 145.940, 145.860 MHz FM, 1200 bps Manchester FSK
Downlink 437.0513 MHz SSB, 1200 bps RC-BPSK 1200 Baud PSK
Beacon 2401.1428 MHz.)
Operating normally.

The AO-16 command team has authorized an APRS experiment on AO-16 to explore the use of the 1200-baud PACSAT for APRS position/status reporting. The test periods will run each Tuesday from 0000 to 2359 UTC.

The telemetry is nominal.

Time is Fri Aug 21 22:00:38 1998 uptime is 1433/16:27:51	
+X (RX) Temp        -14.524 D  RX Temp                -0.607 D	
RC PSK BP Temp    -3.027 D  RC PSK HPA Tmp  -3.632 D	
+Y Array Temp       -19.970 D  PSK TX HPA Tmp   -5.448 D	
+Z Array Temp  -20.575 D	
Total Array C= 0.210 Bat Ch Cur=-0.051 Ifb= 0.022 I+10V= 0.298
TX:010B BCR:6F PWRC:59E BT: A WC:25 EDAC:3A

General information and telemetry WOD files can be found at http://www.arrakis.es/~ea1bcu/wod.htm

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

DO-17 (DOVE)

Downlink 145.825 MHz FM, 1200 Baud AFSK
Beacon 2401.220 MHz
Currently non-operational.

The 145.825 MHz and 2401.220 MHz downlinks are off the air. No additional information is available at this time.

WEBERSAT (WO-18)

Downlink 437.104 MHz SSB, 1200 Baud PSK AX.25
Currently non-operational.

WO-18 is in MBL mode after a software crash. No additional information is available at this time.

LUSAT-OSCAR-19

Uplink 145.840, 145.860, 145.880, 145.900 MHz 1200 bps Manchester FSK
Downlink 437.125 MHz SSB, 1200 bps RC-BPSK
Currently semi-operational.

Miguel Menendez, EA1BCU reports LUSAT/Oscar 19 apparently stopped transmitting. Ground control station LU8DYF has succeeded in regaining control. Downlink signals show good modulation with an ASCII message containing the following text:

July 31 - 1998. No BBS service. On Board Computer reload in progress.
Digipeater active. Thank you - Norberto - LU8DYF.

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

UO-22

Uplink 145.900 or 145.975 MHz FM
Downlink 435.120 MHz FM 9600 Baud FSK
Operational.

More information on the satellite is available at the following URL:

http://www.ee.surrey.ac.uk/EE/CSER/UOSAT/

[ANS thanks Chris Jackson, G7UPN/ZL2TPO, Operations Manager of UO-22 for this report]

IO-26 (ITAMSAT)

Uplink 145.875, 145.900, 145.925, 145.950 MHz FM
Downlink 435.822 MHz SSB, 1200 Baud PSK
Semi-operational.

Telemetry is reported as being downloaded on 435.822 MHz at 1200 baud PSK. No additional information is available at this time.

TMSAT-1 TO-31

Downlink 436.923 MHz

The TMSAT-1 micro-satellite was successfully launched from the Russian Baikonur Cosmodrome on July 10, 1998. The satellite is still undergoing initial loading of flight software. The satellite is expected to be available for general amateur use shortly.

A brief overview of the TMSAT satellite and commissioning plan is available at the following URL:

http://www.ee.surrey.ac.uk/EE/CSER/UOSAT/amateur/tmsat/tmsat_commissioning_plan.html

[ANS thanks Chris Jackson, G7UPN/ZL2TPO, for this report]

TechSat-1B GO-32

Downlink 435.325 435.225 MHz
HDLC telemetry framed so a TNC in KISS mode will decode it

The TechSat-1B micro-satellite was successfully launched from the Russian Baikonur Cosmodrome on July 10, 1998 and has now completed its first full week in space. The satellite is still undergoing initial loading of flight software. The satellite is expected to be available for general amateur use shortly.

The satellite does not have a continuous beacon, but does transmit a 9600-baud burst every 30 seconds (for about 3 seconds in length), currently on 435.225 MHz.

The TechSat team has also constructed a new home page about the TechSat bird, and promise they will add more information in the next few weeks. To view the new site, point your web browser to:

http://techsat.internet-zahav.net/

[ANS thanks Shlomo Menuhin, 4X1AS for this information]

[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, nn0dj@amsat.org.

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