LUSAT-OSCAR
19
Satellite Summary
Name: LUSAT-OSCAR 19 aka LUSAT
NASA Catalog Number: 20442
Callsign: Broadcast: LUSAT-11; BBS: LUSAT-12
Launched: January 22, 1990
Launch vehicle: Ariane 4
Launch location: Kourou, French Guiana
Weight: 13.76 kg.
Orbit: Sun-Synchronous near-Polar LEO (Low Earth Orbit)
Inclination: 98 degrees
Size: 226 x 226 x 223 mm
Period: 100.8 Minutes
Features:
-
1200 bps AX.25 protocol store-and-forward PACSAT
Protocol Suite communications system.
-
Coordinated by AMSAT-LU (Argentina)
-
Packet Radio Store and Forward
-
Very Similar in construction and operation to AO-16,
IO-26,
and MO-30.
Digital Transponder - Mode JD:
-
1200 bps Manchester FSK Uplinks:
-
145.840 MHz
-
145.860 MHz
-
145.880 MHz
-
145.900 MHz
-
1200 bps BPSK Downlinks:
-
CW Beacon:
Status: 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.
-
The latest information is available from:
Description
Mineo Wakita, JE9PEL, receives LO-19 CW telemetry with the program HamScope
using only a soundcard. In the below link is a screen capture when Mineo copied
LO-19 at 01:35:30 UTC on December 23, 2001 on 437.125 MHz (+/- Doppler).
http://www.ne.jp/asahi/hamradio/je9pel/11223lus.gif
This is the raw telemetry copied from LO-19:
e lusat hi hi 6o aun abn aun ad4 auv a6b a46 ae6
E LUSAT HI HI 60 129 179 129 184 123 167 146 156
This is the decoded telemetry according to http://www.ne.jp/asahi/hamradio/je9pel/lo19cwte.htm
CH 1: +5 voltage 636/129=4.9 Volts
CH 2: +10 battery voltage 0.064*179=11.5 Volts
CH 3: CW transmitter temp 0.354*(134.7-129)=2.0 Deg.C
CH 4: Output power TX ((10.9+184)^2)/40.1=947 mW
CH 5: Box temperature #4 0.356*(136-123)=4.6 Deg.C
CH 6: +10 v current 0.7*167=117 mA
CH 7: +Z voltage panel 0.15*146=21.9 Volts
CH 8: +8.5 voltage 0.056*156=8.8 Volts
For a description of LO-19, read John Magliacane's, KD2BD, Spotlight
On: The Microsats originally published in The
AMSAT Journal.
Telemetry decoding programs are available from the AMSAT anonymous ftp
server. Here is a listing of Microsat
Programs.
Harold Price, NK6K, has compiled a history
of the Microsat program, complete with photographs.
References
-
D. Conners, "The PACSAT Project," ARRL Amateur Radio Second Computer
Networking Conference, pp. 1-3, March 19, 1983.
-
T. Clark, "AMSAT's Microsat/Pacsat Program," Proceedings of the AMSAT-NA
Sixth Space Symposium, Atlanta, GA, pp. 41-47, Nov 1988, ARRL.
-
L. Johnson and C. Green, "Microsat Project - Flight CPU Hardware,"
Proceedings
of the AMSAT-NA Sixth Space Symposium, Atlanta, GA, pp. 104-106, Nov
1988, ARRL.
-
H. Price and R. McGwier, "PACSAT Software," Proceedings of the AMSAT-NA
Sixth Space Symposium, Atlanta, GA, pp. 145-149, Nov 1988, ARRL.
-
T. Clark, C. Duncan, J. King, B. McGwier, "The First Flock of Microsats,"
The AMSAT Journal, May 1989, pp 3-10.
-
D. Loughmiller and B. McGwier, "Microsat: The Next Generation of OSCAR
Satellites," Part 1, QST, May 1989, pp 37-40; Part 2, QST,
Jun 1989, pp 53-54.
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Doug Loughmiller, "Successful OSCAR Launch Ushers in the 90's,"
QST,
Apr 1990, p. 52.
-
Six for the Price of One - Part I," The AMSAT Journal, Vol. 13,
No. 1, Mar 1990, p. 1; Part II: The AMSAT Journal, Vol. 13, No.
2, May 1990, p. 1.
-
John A. Magliacane, "Spotlight On: The Microsats,"
The AMSAT Journal, Vol. 15, No. 4, Sep/Oct 1992
-
Martin Davidoff, The
Satellite Experimenter's Handbook, 2nd edition, The American Radio
Relay League, Newington, CT., 1990.
-
Mike Crisler, PACSAT
Beginner's Guide, AMSAT.
Return
to Satellite Summary
Last update May 31, 2003 - N7HPR
