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Mir PMS off-line Temporarily Dec 2, 1998





Mir Amateur Radio Status:  Dec 2, 1998

by Miles Mann WF1F,
MAREX-NA (Manned Amateur Radio Experiment, North American Division)

PMS is off Line (Temporarily)
The Mir Personal Message System went off line Saturday Nov 29, 1998 and was
still
off line as of Dec 1.  I have been in contact with Energia and was have
been discussing
the problem.  The PMS is just sending a Beacon, and is not responding to
connect requests.
We have seen this problem twice before and it may be related to a
Overflowed serial buffer
in the KPC-9612.  The overflow is caused when the crew disconnects the PC
for several days.
Data coming into the TNC from the radio gets stuck trying to go out the PC
port.
Since the PC is not connected, the data backs up.
A simple power cycle or soft reset should clear the problem.
Instructions will be sent to the Mir crew over the commercial channel this
week.

SSTV Status:
The Energia engineering team may have time next week to instruct the Mir
crew on the installation of the SSTV system.  MAREX-NA sent the crew the
cable installation instructions via packet a few weeks ago.  The cable
installation is complex.  The existing PMS system needs to be
moved from the PRIRODA module to the Mir-Core module.  Both the SSTV and
the PMS will
be sharing the same antenna.  MAREX-NA has delivered all of the required
cables, filter etc.
to complete the connections.  It is very important that all of the
connections are made correctly.
It is possible there may be additional PMS down time next week while the
SSTV is being installed.

Tracking Mir, Sputnik and Zarya

The best way to track satellites is to get access to a good satellite
tracking program.  There are numerous programs on the market, both for sale
and share ware.

The orbit of Mir is drifting much faster this year than last year.  Mir is
now 30 miles lower than
it was the same time last year.  The lower the altitude, the greater the
drag.
The drift is so great that week old KEPS may be in error by 4 minutes.  If
you want to track Mir,
you will need to update your KEPS at least weekly.
Unmanned Satellites in higher orbits do not need frequent KEP updates.  As
a general rule, the higher the orbit the longer your KEPS will be good for.
Example Oscar 10, keps are good for  30-60 days.

The best place for current Kep data is at the CelesTrak web page
http://celestrak.com/
Keps from December 1, 1998

     MIR
     1 16609U 86017A   98335.46837800  .00042320  00000-0  31740-3 0    55
     2 16609  51.6570 275.9574 0007573  32.9607 327.2490 15.71869263730304
     KVANT 1
     1 17845U 87030A   98334.95973737  .00034343  00000-0  26223-3 0  6059
     2 17845  51.6598 278.5581 0007992  34.1795 325.8714 15.71818104664331
     KVANT 2
     1 20335U 89093A   98334.95973737  .00034343  00000-0  26223-3 0  4304
     2 20335  51.6598 278.5581 0007992  34.1795 325.8714 15.71818104513343
     KRISTALL
     1 20635U 90048A   98334.95973737  .00034343  00000-0  26223-3 0  2228
     2 20635  51.6598 278.5581 0007992  34.1795 325.8714 15.71818104484174
     SPEKTR
     1 23579U 95024A   98334.95973737  .00034343  00000-0  26223-3 0  1866
     2 23579  51.6598 278.5581 0007992  34.1795 325.8714 15.71818104201654
     PRIRODA
     1 23848U 96023A   98334.95973737  .00034343  00000-0  26223-3 0  8682
     2 23848  51.6598 278.5581 0007992  34.1795 325.8714 15.71818104148743
     SOYUZ TM-28
     1 25429U 98047A   98334.95973737  .00034343  00000-0  26223-3 0  1196
     2 25429  51.6598 278.5581 0007992  34.1795 325.8714 15.71818104 17217
     PROGRESS M-40
     1 25512U 98062A   98334.95973737  .00034343  00000-0  26223-3 0   465
     2 25512  51.6598 278.5581 0007992  34.1795 325.8714 15.71818104  5790
     ZARYA
     1 25544U 98067A   98335.46798608  .00019905  00000-0  25273-3 0   645
     2 25544  51.5932 111.1885 0009081 245.3501 114.6559 15.59368254  1763
     SPUTNIK-41
     1 25533U 98062C   98334.92749116  .00231919  00000-0  13513-2 0   226
     2 25533  51.6619 278.3291 0005295  78.3969 281.8904 15.77197853  3089

Web Page information:
For information about the MAREX-NA SSTV project, check the web page at:

http://www.geocities.com/CapeCanaveral/Hangar/7355/sstv_proj.htm

For general information about some of the Mir Projects, check the web page
at

     http://www.ik1sld.org/mirex.htm  OR
     or
     http://www.geocities.com/CapeCanaveral/Lab/3431/mirex.htm


Copyright 1998 Miles Mann, All Rights Reserved.  This document may be
freely distributed via the following means - Email (including listservers),
Usenet, and WorldWideWeb.  It may not be reproduced for profit including,
but not limited to, CD ROMs, books, and/or other commercial outlets without
prior written consent from the author.

Miles WF1F


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