SB SAT @ AMSAT   $ANS-324.01
MORE DOVE TELEMETRY FORMATS

HR AMSAT NEWS SERVICE BULLETIN 324.01 FROM AMSAT HQ
SILVER SPRING, MD NOVEMBER 20, 1993
TO ALL RADIO AMATEURS BT
BID: $ANS-324.01

NK6K Explains More Of DOVE's Telemetry Format

The LSTAT line is sent by the loader portion of PHT (the loader/command/
telemetry task).  It purpose is to show the state of the software loader
process so that if something goes wrong during upload, the DOVE ground
command stations can tell what needs to be done to continue the process.

The LSTAT line comes in two types, as shown below.

    I P:0xhhhh o:n l:nnnn f:nnnn, d:n st:n\

    A: 0xhhhh, P:0xhhhh, o:n l:nnnn f:nnnn, d:n st:n

I  - means there is no software load in progress (inactive)

A: - means a software load is in progress (active). hhhh is the segment
     address of the program being loaded.

P: - the segment of the running program (PHT).  The initial load of PHT
     is always at 0x3000.  Any other address here means PHT has been
     reloaded.

o: - The number of times the HDLC output queue was full when PHT tried to
     send a frame.  This is left over from debugging the only major bug
     found in the I/O drivers since launch.  A bug occasionally caused
     a 65,535 byte frame to be sent, filling the output queue for nine
     minutes.  This should always be zero.

l: - The largest free memory block, in decimal paragraphs.  To find the
     the number of free bytes in the largest block, multiply this number
     by 16.  This number shows the largest program that can be loaded at
     that time.

f: - The total amount of free memory, in decimal paragraphs.

d: - The digipeat flag, 1 is digipeat on, 0 is digipeat off.  (Will always
      be off for DOVE)

st:- The task number of the last task loaded.

[The AMSAT News Service (ANS) would like to thank Harold Price (NK6K) for
this bulletin item.]

/EX
SB SAT @ AMSAT   $ANS-324.02
AMSAT OPS NET SCHEDULE

HR AMSAT NEWS SERVICE BULLETIN 324.02 FROM AMSAT HQ
SILVER SPRING, MD NOVEMBER 20, 1993
TO ALL RADIO AMATEURS BT
BID: $ANS-324.02

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-Nov-93       0230   B        39      WJ9F    VE2LVC
12-Dec-93       0435   B       180      W9ODI   WB6LLO
 3-Jan-94       0200   B       160      WA5ZIB  N7NQM

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 NCS 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-324.03
WEEKLY OSCAR STATUS REPORTS

HR AMSAT NEWS SERVICE BULLETIN 324.03 FROM AMSAT HQ
SILVER SPRING, MD NOVEMBER 20, 1993
TO ALL RADIO AMATEURS BT
BID: $ANS-324.03

Weekly OSCAR Status Reports: 20-NOV-93

AO-13: Current Transponder Operating Schedule:
L QST *** AO-13 TRANSPONDER SCHEDULE ***  1993 Nov 15-Jan 31
Mode-B  : MA   0 to MA  95 !                   / Eclipses, max
Mode-B  : MA  95 to MA 180 ! OFF Dec 07 - 24. <  duration 136
Mode-B  : MA 180 to MA 218 !                   \ minutes.
Mode-S  : MA 218 to MA 220 !<- S beacon only
Mode-S  : MA 220 to MA 230 !<- S transponder; B trsp. is OFF
Mode-BS : MA 230 to MA 256 !        Blon/Blat 240/-5
Omnis   : MA 250 to MA 150 !  Move to attitude 180/0, Jan 31
AO-13 will experience another partial solar eclipse on 1993 Dec 13 [Mon].
It sees the Moon eclipse the Sun from 10:09 - 10:59 UTC with a maximum 53%
obscuration at 1034 utc.  This is Orbit #4211 MA 73-92.  The encounter will
be "visible" on the telemetry to stations throughout the USA and Japan.
Reports would be appreciated.  Stations who observed this spectacular
eclipse of Nov 13 will know what to look for.  Eclipses of sun by earth
commence on Dec 07 [Tue] and continue until Dec 24 [Fri].  The eclipses are
of course total.  The maximum lasts 2 hours and 16 minutes, and is the
longest AO-13 has ever experienced.  The telemetry during these outages is
very interesting, particularly the spacecraft temperatures; some reach
-40 C.  The Mode-B transponder will be OFF from MA 95 to 180 during this
two week period.  [G3RUH/DB2OS/VK5AGR]

DOVE: TLM has been copied moderately well on 145.825 MHz, with much
      stronger signal levels on the S-band beacon.  Please send any
      telemetry that you capture to PY2BJO at his INTERNET address of
      py2bjo@amsat.org.  [W7IUV]

AO-16: Operating normally.  [WH6I]

UO-22: Operating normally.  [WH6I]

LO-19: Operating normally.  [WH6I]

KO-23: Up and running.  Busy as usual.  There are a number of images.
      [WH6I]

KO-25: File system is up but not open for uploads.  It appears that the
       satellite has taken and EIS image, but it is not available.  [WH6I]

IO-26: Up and running with a lot of activity.  [WH6I]

FO-20: The FO-20 Mode JA period on the 17-18th of November provided strong
       downlink and beacon signals but only moderate activity during the
       passes that were visible.  The following is the FO-20 operating
       schedule:
              Analog mode: 24-Nov-93  08:20 -to- 25-Nov-93 8:38  UTC
                           01-Dec-93  08:43 -to- 07-Dec-93 7:16  UTC
                           15-Dec-93  07:41 -to- 22-Dec-93 8:05  UTC
       Digital mode: otherwise noted above.  In December, analog mode and
       digital mode will be ON alternately for a week, respectively.
       [W7IUV & JJ1WTK]

RS-10: RS-10 has had excellent downlink signals, but only moderate activity
       during the last week.  This bird produces more fun per pass than any
       other amateur satellite in orbit.  [W7IUV]

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

