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1993-08-28
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SB SAT @ AMSAT $ANS-233.01
MORE INFO ABOUT OSCARS
HR AMSAT NEWS SERVICE BULLETIN 233.01 FROM AMSAT HQ
SILVER SPRING, MD AUGUST 21, 1993
TO ALL RADIO AMATEURS BT
BID: $ANS-233.01
KITSAT-B: First Independently Built Korean Satellite
AMSAT-NA would like to correct a bulletin a few weeks ago with respect to
KITSAT-B. The KITSAT-B satellite was NOT built at the Univeristy of Surrey
but at the Korean Advanced Institute of Science and Technology (KAIST).
The satellite was built entirely in Korea using an all-Korean team. Mem-
bers of this team were trained at Surrey and built KITSAT-A (now known as
UO-22) at Surrey; however KITSAT-B is a completely Korean effort. This
independent effort is considered to be an important phase in the edu-
cational "technology transfer" between Surrey and KAIST.
POSAT-1: Possible Opportunities For Amaetur Experimentation
PoSAT-1 was built at Surrey by SSTL staff and a team of 4 engineers
seconded from Portugese industry. PoSAT-1 has been built as a technology-
transfer project between SSTL and a consortium of Portugese aerospace
companies. The satellite carries an Earth imaging camera, a CCD Star
sensor, a Trimble GPS receiver and a digital signal processing experiment
with TMS320C25 and TMS320C30 processors. The standard on-board computer
supporting standard PACSAT protocols will also be provided.
Although its primary mission is outside the amateur bands, Surrey is
negotiating with the Portugese industrial consortium for PoSAT to operate
in the amateur bands part ot the time. Such part time amateur access
would allow standard UoSAT-OSCAR-22 equipped stations to receive pictures
from the camera and data from the GPS experiment. It is also possible to
provide high speed modulation through the DSP system, which will allow
radio amateurs to develop the necessary RF and digital techniques to go
beyond 9600 baud.
The PoSAT camera has the same optics as the KITSAT-A camera, but since
PoSAT is to be at half of the altitude of KITSAT, resolution should be
doubled. The narrow-angle camera should produce 200 meter resolution.
Standard PACSAT Broadcast Protocol techniques will be used to download the
images. The amateur community will be kept informed as negotiations with
the Portugese Consortium continue. Mail from radio amateurs who think they
might be interested in receiving PoSAT-1 in the amateur bands would be
appreciated and might help in conducting these discussions. Please send
your comments and suggestions to the following address:
Jeff Ward, K8KA/G0SUL
Surrey Satellite Technology
University of Surrey UoSAT Unit
Guildford, Surrey GU2 5XH
England
Or via Internet: k8ka@AMSAT.org
[The AMSAT News Service (ANS) would like to thank Jeff Ward K8KA/G0SUL for
the information used in this bulletin.]
/EX
SB SAT @ AMSAT $ANS-233.02
PHASE-3D STATUS REPORT
HR AMSAT NEWS SERVICE BULLETIN 233.02 FROM AMSAT HQ
SILVER SPRING, MD AUGUST 21, 1993
TO ALL RADIO AMATEURS BT
BID: $ANS-233.02
WD4FAB Provides Latest Phase-3D Status Report & Request For Assistance
Dick Jansson (WD4FAB) AMSAT-NA VP for Engineering, reports that the
assembly of the Engineering Structural Model for Phase 3-D is now nearing
completion in Germany. As many of you know, Dick, along with a team from
Weber State University, has been working on this critical task for the past
month with Dr. Karl Meinzer (DJ4ZC) and Werner Haas (DJ5KQ) of AMSAT-DL.
Their goal has been to confirm the form, fit and function of structural
designs for the new satellite. Dick says that the effort has been a
tremendous learning experience for all. It has also given everyone
involved a much clearer vision of where and how we must proceed in
the months to come in order to be ready for launch in 1996.
As this stage of the development draws to a successful close, and as a
direct result of the process, Dick now foresees that some additional, and
immediate, machining expertise for the spacecraft thermal structure will be
required beyond that already being expertly provided by our Weber State
University people. He's asked that an urgent request be made for some
additional help with machining some of the structural parts for the
spacecraft.
Anyone with "hands on" machining experience, particularly in the milling
and fine finishing of metal parts, and who also has both the spare time and
use of facilities to donate to the Phase-3D cause are welcome to volunteer.
Anyone who would like to help, or knows of someone who can, please contact
Dick Jansson (beginning August 24th) at (407) 644-9008, or fax him at (407)
644-9782.
[The AMSAT News Service (ANS) would like to thank Dick Daniels (W4PUJ) for
the information used in this bulletin.]
/EX
SB SAT @ AMSAT $ANS-233.03
AMSAT OPS NET SCHEDULE
HR AMSAT NEWS SERVICE BULLETIN 233.03 FROM AMSAT HQ
SILVER SPRING, MD AUGUST 21, 1993
TO ALL RADIO AMATEURS BT
BID: $ANS-233.03
Current AMSAT Operations Net Schedule For AO-13
AMSAT Operations Nets are planned for the following times. Mode-B Nets
are conducted on AO-13 on a downlink frequency of 145.950 MHz. If, at the
start of the OPS Net, the frequency of 145.950 MHz is being used for a QSO,
OPS Net enthusiasts are asked to move to the alternate frequency of 145.955
MHz
Date UTC Mode Phs NCS Alt NCS
28-Aug-93 1830 B 157 WJ9F VE2LVC
11-Sep-93 0730 B 159 VE2LVC W9ODI
18-Sep-93 1515 B 96 N7NQM W5IU
Any stations with information on current events would be most welcomed.
Also, those interested in discussing technical issues or who have questions
about any particular aspect of OSCAR statellite operations are encouraged
to join the OPS Nets. In the unlikely event that either the Net Control
Station (NCS) or the alternate do not call on frequency, any participant is
invited to act as the NCS.
**************************************
Slow Scan Television on AO-13
SSTV sessions will be held on immediately after the OPS Nets a downlink on
a Mode-B downlink frequency 145.960 MHz.
/EX
SB SAT @ AMSAT $ANS-233.04
WEEKLY OSCAR STATUS REPORTS
HR AMSAT NEWS SERVICE BULLETIN 233.04 FROM AMSAT HQ
SILVER SPRING, MD AUGUST 21, 1993
TO ALL RADIO AMATEURS BT
BID: $ANS-233.04
Weekly OSCAR Status Reports: 21-AUG-93
AO-13: Current Transponder Operating Schedule:
L QST *** AO-13 TRANSPONDER SCHEDULE *** 1993 Aug 14-Oct 25
Mode-B : MA 0 to MA 60 !
Mode-BS : MA 60 to MA 120 !
Mode-S : MA 120 to MA 145 !<- Mode-S transponder; B transponder is OFF
Mode-S : MA 145 to MA 150 !<- Mode-S beacon only
Mode-BS : MA 150 to MA 210 ! Blon/Blat 180/0
Mode-B : MA 210 to MA 256 !
Omnis : MA 170 to MA 15 ! Move to attitude 210/0 25-Oct-1993
Continuous up-to-date information about AO-13 operations is always
available on the beacons at 145.812 MHz and 2400.646 MHz in CW, RTTY and
400 bps PSK. Also, these bulletins are also posted to INTERNET, ANS
bulletins, Packet, PACSATs, etc., and can also be found in many inter-
national newsletters. [G3RUH/DB2OS/VK5AGR]
RS-10: WB2WPA reports excellent results at his QTH with RS-10. He notes
that he has worked 12 states and a number of VE provinces in casual
operating over the past few weeks. He installed an Advanced Receiver
Research (ARR) 10M preamp, and he saw his signals rise to S-9+. Also,
WB2WPA has seen good "over-the-horizon" results for about 1 minute before
AOS and after LOS recently running 80 watts to a 15 element beam with
horizontal polarization. Also, WC9C reports that the RS-10 transponder is
working just fine. With the Solar Flux dropping below 100, Mode-A signals
even during the day light hours are fairly strong. The transponder activ-
ity was very high last week with at least 3 DX stations heard. There was
no message on the telemetry beacon this week, and the CW Robot was also
working just fine. [WB2WPA & WC9C]
RS-12: GM4IHJ has been copying RS-12 well into the evenings in the UK while
it is "sub-horizon" at the terminator over UA0. He notes that it is well
worth the time for RS-12 operators to be looking for the satellite long
before AOS and long after LOS and even on "out of range" passes to the
north. If you can hear the 29.407 MHz beacon the chances are that the
satellite transponder will hear your 21.210 - 21.250 MHz uplink. WC9C
reports that RS-12 Mode-K transponder is working fine with lots of activ-
ity. With 15M dropping off as the solar flux falls, he says that there is
alot less interference to the Mode-K uplink passband. At the end of the
telemtry frame there was this test message which said: "Test test test RS3X
QTH Kaluga" [GM4IHJ/G3IOR & WC9C ]
AO-16: Operating normally. [WH6I]
UO-22: Operating normally. [WH6I]
KO-23: Operating normally. [WH6I]
The AMSAT NEWS Service (ANS) is looking for volunteers to contribute weekly
OSCAR status reports. If you have a favorite OSCAR which you work on a
regular basis and would like to contribute to this bulletin, please send
your observations to WD0HHU at his CompuServe address of 70524,2272, on
INTERNET at wd0hhu@amsat.org, or to his local packet BBS in the Denver, CO
area, WD0HHU @ W0LJF.#NECO.CO.USA.NOAM. Also, if you find that the current
set of orbital elements are not generating the correct AOS/LOS times at
your QTH, PLEASE INCLUDE THAT INFORMATION AS WELL. The information you
provide will be of value to all OSCAR enthusiasts.
/EX