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
Digital Transponder - Mode JD:
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,
1200 bps Manchester FSK Uplinks:
1200 bps BPSK Downlinks:
- 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:
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).
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
Telemetry decoding programs are available from the AMSAT anonymous ftp
server. Here is a listing of Microsat
Harold Price, NK6K, has compiled a history
of the Microsat program, complete with photographs.
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,"
of the AMSAT-NA Sixth Space Symposium, Atlanta, GA, pp. 104-106, Nov
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.
Doug Loughmiller, "Successful OSCAR Launch Ushers in the 90's,"
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.
to Satellite Summary
Last update May 31, 2003 - N7HPR