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ISS Packet OFF duirng SuitSat Feb 3



By Miles Mann WF1F,

MAREX-MG News   www.marexmg.org
Manned Amateur Radio Experiment

Packet Turned “OFF” for duration of SuitSat:

For the duration of the SuitSat project, the ISS
“packet” mode will be turned “OFF”.
Please do not transmit any packet or voice data on
145.990 MHz SuitSat down link frequency.

Packet Turned "OFF" for duration of SuitSat:

For the duration of the SuitSat project, the ISS
"packet" mode will be turned "OFF". Please do not
transmit any packet or voice data on 145.990 MHz
SuitSat down link frequency.

Cross Band Repeat:
There is a possibility that the ISS Kenwood D700 may
be configured to act as a telemetry cross band
repeater for the SuitSat project.  The Russian team is
working on the details to program the D700 to
retransmit the telemetry from the SuitSat on the down
link of 437.800 MHz FM.  The reason for the
rebroadcast is to extend the listening range of the
SuitSat project.  When SuitSat is launched, it will be
flying very close to the ISS. 
As the days go by, the distance between the two
satellites will gradually increase to hundreds of
miles.  One of the satellites will lead the other by
several  minutes (I am not going to tell you which,
you will have to put on your thinking cap and figure
this one out).  The cross band telemetry mode can in
theory double the listening range of the SuitSat
project.  The 2-6 day battery life of the SuitSat will
be the actual limiting factor of 
this project,.

New time for SuitSat EVA, Feb 3, 2006 at 22:20 UTC

ARISS to activate a new hand launched educational
satellite project from the International Space
station.  The new educational experiment is called
SuitSat.  The SuitSat project is onboard the
International Space Station and is being prepared for
activation very soon.  The SuitSat project has a
tentative activation date of February 3, 2006.  The
SuitSat activation will take place during the ISS crew
space walk.
SuitSat will be a hand launched by the ISS crew during
the Spacewalk.  

ALL NOTE !!
Since we have just determined that the batteries in
SuitSat may last only a few days, suggest prepare now
to receive the 1st transmissions so as not to miss out
on this Historical event !!!

What is SuitSat:
In short, the crew will toss an old spacesuit out the
airlock and let fly away as its own satellite.  The
space station crew have attached an Amateur radio
beacon transmitter to the spacesuit.  The SuitSat
project as it is called will broadcast telemetry and
voice messages to earth for as long as the batteries
last.  Anyone with a simple FM receiver or police
scanner should be able to  hear the signals from
SuitSat as it orbits around 
the earth 15 times a day.

SuitSat Details:
For more specific details on the SuitSat project,
please review the 
AMSAT and related links below.

If you  would like to help ARISS track the performance
of suit sat, 
then you can go to the special SuitSat web page and
log your signal reports.
http://www.suitsat.org/

Additional information on SuitSat at the AMSAT web
pages.
http://www.amsat.org/amsat-new/articles/SuitSat/

ARISS SuitSat Details
http://www.amsat.org/amsat-new/articles/BauerSuitsat/index.php

Orbit Pass Times for Suit Sat (Boston, Houston and San
Francisco)
I have enclosed some approximate orbit pass times for
the cities listed 
for 4th.  For more accurate tracking try locating a
software tracking 
program or just use the NASA web page and track the
International Space Station.
(http://science.nasa.gov/Realtime/JTrack/Amateur.html)

Assuming Suit sat is activated at 22:20 UTC on
February 3rd 2006, It will be heard first in S.
America, Africa, Asia, Australia and Europe.  North
America will be in range the next day on February 4th.

San Francisco
To convert PST to UTC add 8 hours
 Feb 4
 0226-0234 PST	10:26-10:34 UTC
 0400-0408 PST	1200-1208 UTC
 0537-0545 PST 	1337-01345 UTC
 0714-0720 PST	1514-1520 UTC  
 0849-0857 PST	1649-1657 UTC
 1024-1032 PST	1824-1832 UTC
 1201-1207 PST	2001-2007 UTC

Houston
To convert from CST to UTC add 7 hours
Feb 4
0153-0201 CST	08:53-08:01 UTC
0329-0337 CST	10:29-10:37 UTC
0821-0825 CST	1521-1525 CST
0955-1003 CST	1655-1703 CST
1131-1139 CST	1831-1839 CST

Boston
Feb 4
02:25-02:33 EST	7:25-7:33  UTC
03:59-04:09	EST	08:59-09:09 UTC
05:35-05:44 EST 	10:35-10:44 UTC
07:10-07:20	EST	12:10-12:20 UTC
08:45-08:55	EST	13:45-13:55 UTC
10:21-10:30 EST	15:21-15:30 UTC


SSTV (Slow Scan TV ):
SSTV is a way Amateur Radio stations send JPG still
images around the 
world. We use an audio format we call SSTV.  The
SuitSat project will transmit
Telemetry, Pre-Recorded Voice messages and one SSTV
image.  The whole
process will repeat approximately every 9 minutes.
(Robot 36 format).

What's left is to connect your computer to the speaker
of your radio 
and some SSTV decoding software, such as ChromaPix 
http://www.barberdsp.com/ or
similar software. Here are just two of the many
Share-Ware SSTV 
applications on the market.  There may be many more.

W95SSTV by Silicon Pixels
http://www.barberdsp.com/w95sstv/w95dload.htm

MMSSTV
http://mmhamsoft.ham-radio.ch/

There are also many High quality pay software
applications that offer 
many more features, such as multiple windows that
allow you to simultaneously receive an image while
preparing your next image that you want to 
transmit.

CPIX
http://www.barberdsp.com/

What is Slow Scan TV?
On this web page you will find many links to help you
learn more about 
Slow Scan TV
http://www.marexmg.org/fileshtml/sstvlinkpage.html

Tips on how to use ISS, SSTV, Packet and Voice
http://www.marexmg.org/fileshtml/howtouseiss.html

Marexmg Web page
http://www.marexmg.org

73 Miles WF1F MAREX-MG

Until we meet again
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