September 6, 1998

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Special Event Station

The EROS Data Center located near Sioux Falls, South Dakota will be celebrating its 25th anniversary on September 19, 1998 by hosting a special event amateur radio station.

The EDC is a national mapping center under the direction of the United States Geological Survey department. The EDC houses the largest archive of aerial photos, satellite and space shuttle images in world. EDC is a ground receiving station for NOAA-14 and 15, and will also be a ground operations station for the upcoming Landsat-7 satellite.

The Amateur Radio operators of the EDC will be hosting special event station W0E during the anniversary. Chad, KG0MW, South Dakota AMSAT Area Coordinator says the station will be active on several satellites, including UO-22, RS-12 and both FO-20 and FO-29. "Conditions permitting", KG0MW said, "operation on AO-10 is also planned." Full HF operation is also scheduled.

A color QSL card will be available for those successful in contacting W0E.

Information about the EDC is available at the following URL:

More information about special event station W0E can be obtained from KG0MW at:

[ANS congratulates the EDC on its 25th anniversary and thanks Chad Phillips, KG0MW, for this information]

1998 Pack Rat Conference

Ron, WZ1V, tells ANS satellite operators will not want to miss the 1998 Pack Rat Conference. It will be packed with technical presentations, an interesting speaker lineup and several technical sessions, including noise figure measurements, network analyzers, spectrum analyzers and power supplies. All equipment will be operational up to 10 GHz.

The conference is scheduled for Saturday, October 3, 1998.

Presentations will include the following:

More information on the 1998 Pack Rat Conference is available at the following URL:

[ANS thanks Ron Klimas, WZ1V, 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 . TO-31 . GO-32


SAFEX II 70cm Repeater
Uplink 435.750 MHz FM with subaudible tone 141.3 Hz
Downlink 437.950 MHz FM
SAFEX II 70cm QSO Mode
Uplink 435.725 MHz FM with subaudible tone 151.4 Hz
Downlink 437.925 MHz FM
Packet Radio PMS
Uplink/Downlink 145.985 MHz FM, 1200 baud AFSK

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

Some frequency changes concerning the PMS system have been reported to ANS recently. No official announcement of any frequency change has been received from MIREX. ANS regards any Mir frequency change as 'temporary' unless an official announcement is received from MIREX.

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]


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 KT.

Strong 2-meter downlink signals have been reported.


Uplink 145.858 to 145.898 MHz CW/SSB
Downlink 29.354 to 29.394 MHz CW/SSB
Beacon 29.352 MHz (intermittent)
Semi-operational, Mode A.

John, G7HIA, reports on a recent overhead pass in central England he did not copy the RS-15 beacon but his return signal was very strong with minimal QSB from elevation to about 30 degrees. John was running about 20 watts to a 5-element beam.


Uplink 435.030 to 435.180 MHz CW/LSB
Downlink 145.975 to 145.825 MHz CW/USB
Beacon 145.810 MHz (unmodulated carrier)
Semi-operational, currently in "sleep" mode.

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:

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


Uplink 145.850 MHz FM
Downlink: 436.792 MHz FM

Gary, KD5DAY, reports on a recent AO-27 pass the bird was very noisy and he lost the signal about 5 minutes into the pass.

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]

JAS-1b FO-20

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

FO-20 in mode JA continuously.

Raul, EB4GZO, will be looking for US station on both FO-20 and FO-29. He may activate the Radio Club Universidad de Alcala callsign as well -- EA4RKU.

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


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
Not operational, the satellite is in JA (voice) mode.

Kazu, JJ1WTK, tells ANS that OBC bit error investigation continues and the satellite will remain in voice mode. FO-29 has entered a period of 'full illumination' by the Sun. This illumination period will extend through the end of December.

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


Uplink 145.850, 145.900 MHz FM
Downlink 435.175 MHz FM, 9600 Baud FSK

Jim, AA7KC reports KO-23 downlink efficiencies are exceeding 90%.

[ANS thanks Jim Weisenberger, AA7KC for this report]


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

Jim, AA7KC reports KO-25 downlink efficiencies are exceeding 90%.

[ANS thanks Jim Weisenberger, AA7KC for this report]


Downlink 145.825 MHz FM, 1200 baud PSK
Beacon 2401.500 MHz

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

Beacon reception reports should be sent to:

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


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 Sat Sep 05 11:38:04 1998 uptime is 1448/06:03:51
+Z Array V            21.892 V   Array V                20.820 V	
+X (RX) Temp       -0.002 D   RX Temp               -4.842 D	
+5V Bus                 4.874 V   +8.5V Bus             9.015 V  	
+10V Bus             11.150 V   RC PSK TX Out     0.472 W	
Baseplt Temp         3.629 D   +Z Array Temp       6.654 D 	
RC PSK BP Temp  2.419 D   RC PSK HPA Tmp  3.629 D	
+Y Array Temp      -0.002 D   PSK TX HPA Tmp   1.209 D  	
Total Array C= 0.404 Bat Ch Cur= 0.026 Ifb= 0.027 I+10V= 0.286
TX:010B BCR:84 PWRC:59E BT: A WC:25 EDAC:28

General information and telemetry WOD files can be found at

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


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.

EA1BCU reminds operators the digipeater mode is "a very interesting option to make contacts with other stations, or to be connected with your own station to evaluate the on-line the state of your installation." Bob, WB4APR, says an efficient way to communicate via a space digipeater is to use un-numbered UI frames, which require no acknowledgment. This way several stations can talk all to each other.

Telemetry is as follows:

Time is Sat Sep 05 12:06:07 1998 uptime is 035/22:28:31	
Bat 1 Temp            -0.991 D   Bat 2 Temp             0.692 D  	
Baseplt Temp          0.692 D   RC PSK TX Out       0.659 W	
RC PSK BP Temp  -2.113 D   RC PSK HPA Tmp  -0.991 D	
+Y Array Temp        1.813 D   PSK TX HPA Tmp   -2.113 D  	
+Z Array Temp        0.131 D	
Total Array C= 0.323 Bat Ch Cur= 0.108 Ifb=-0.004 I+10V= 0.168
TX:017 BCR:8A PWRC:62D BT:3C WC: 0

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


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

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

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


Uplink 145.875, 145.900, 145.925, 145.950 MHz FM
Downlink 435.822 MHz SSB, 1200 Baud PSK

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


Downlink 436.923 MHz

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

Viktor, OE1VKW, reports receiving signals from TO-31 with a total of 7518 bytes (files and telemetry) received on a recent pass.

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

[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 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:

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

The following satellites are non-operational at this time:


Attempts to command the Mode A transponder have been unsuccessful. The 435 MHz beacon (only) is operational. The RS-16 transponder is non-operational. No additional information is available at this time.

DO-17 (DOVE)

Downlink 145.825 MHz FM, 1200 Baud AFSK
Beacon 2401.220 MHz

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


Downlink 437.104 MHz SSB, 1200 Baud PSK AX.25

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

[Please send any amateur satellite news or reports to the ANS Editors at, or to ANS Editor Dan James, NN0DJ, at]

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