
| News IK1SLD November 2, 2000 |
By Miles Mann WF1F, MAREX-NA (Manned Amateur Radio Experiment, North American Division)
Space Station Alpha is ON THE AIR
ISS ALPHA:
The first full time crew for ISS ALPHA has docked and moved in.
One of their first official requests was to give the International space station
a name.
Astronaut Bill Shepeard ask Dan Goldin of NASA for a request on behalf of the
first ISS ALPHA crew.
Dan left him self open during all of the congratulatory speeches and said what's
the request. Bill asked to use the call sign of the Space station as
Alpha. Dan initially said, ok temporally we will use the call sign Alpha.
The ISS ALPHA crew then all grabbed a hand and had a big three way hand shake.
Later Dan said its official, we will call ISS ALPHA for the rest of your
mission. Dan then went on to comment how when Bill wants something,
he sticks with it until he gets it. It seems that Bill is one of the may
who wanted the name Alpha.
When I was in Russian in 1998 training Mir cosmonauts on the new MAREX amateur
radio equipment, everyone in Russia was calling the ISS ALPHA. When I came back
to the states, I called ISS ALPHA in a few of my Mir news memos. I
then quickly received a memo from a NASA engineer stating that "an official
international board has determined that ISS does not have an official name at
this time, a name will be chosen in the future, bla bla bla".
Congratulations to Bill Shepherd, Yuri Gidzenko and Sergei Krikalev for
cutting through all the red tape and giving ISS ALPHA a name. Lets hope
her names stays and she flies as long as the successful Russian Mir program.
I would also like to nominate Bill Shepherd for the first annual Lt. Montgomery
Scott Flight Engineer award. For being able to grasp the moment and
succeed where so many others have tried.
For more information on this mission please check the NASA web pages.
http://spaceflight.nasa.gov/index-n.html
ISS ALPHA visibility:
The NASA web page has a program, which will calculate the potential for being
able to visually see the ISS ALPHA as it passes over your city.
They have a listings for many different cities and countries.
http://spaceflight.nasa.gov/realdata/sightings/
ISS Alpha VHF / UHF radio links:
Alpha is not currently connected to the TDRS NASA satellite network.
The Alpha crew has been using the old MIR VHF and UHF radio links to communicate
with Mission control. This morning driving into work (Boston area) I
was able to monitor the Alpha crew chatting with Mission control Moscow.
Amateur Radio Equipment delivered:
The 2-meter voice and packet station has already been delivered to the
International space station. It has been estimated that it will require
the ISS ALPHA crew 2 hours to unpack and install the amateur radio station.
The time line for this project is only one hour, so a little adjustment needs to
be done to fit the task into the time line. At the present time, there is
no official public start time for the amateur radio station from ISS ALPHA.
International Space Station Alpha Amateur Radio Call
signs:
The ISS ALPHA is keeping the international flair by hosting several amateur
radio call signs from around the world. So far the ISS ALPHA has three
calls signs from three different countries, Russia, USA and Germany. Also each
of the crewmembers of expedition 1, has their own personal Amateur Radio call
sign.
William Shepherd, Expedition commander, KD5GSL
Yuri Gidzenko, Soyuz commander (unknown)
Sergei Krikalev, Flight engineer, U5MIR
Russian Module call sign: RZ3DZR
Other club call signs ISS used: NA1SS and DL0ISS
ALPHA
Ground Station Link:
What will you need to Hear the ISS ALPHA Amateur Radio 2-meter Station.
That's a tricky question because there are good orbit pass and poor low orbit
passes. On a good 45 degree orbit pass, since the ISS ALPHA is only 250
miles high, you will be able to hear the 2-meter signal from the space station
with a very small antenna (0 dBd to minus 12 dBd (rubber duck)).
During a very low orbit passes under 20 degrees you may need a much larger
antenna.
The Amateur Radio station on ISS ALPHA will be transmitting in the satellite
2-meter band (ITU 144.000 - 146.000 mc). I have listed a frequency chart
below. The ISS ALPHA transmitter power output is approximately 3 watts,
into a vertical antenna rated at minus 3 dBd. I do not have the coax loss
values at this time. This combination of power and antenna gain will
provide an ERP rating of approximately 1.5 watts. The 1.5-watt value
is not that bad, I was able to hear the RS-17/18 satellites from my car antenna
(minus 3dBd) and those satellites were only running 0.5 watts. If you only
have a zero dBd gain antenna and a police scanner you will still be able to hear
the ISS ALPHA on some good orbits.
(note: if your antenna is rated in dB rather than the correct dBd value,
subtract 3 to convert the dB value to the correct dBd rating)
Suggested receiving station:
Casual listening for ISS ALPHA and Mir 2-meter vertical or scanner antenna (0
dBd or better) Police scanner or amateur radio with the ability to receive in
the 144 -146 mc or MHz range, FM mode. Antenna cable should be a low loss
RG-8 style cable less than 100 feet long (RG-213 best choice). You will
not need to mount the antenna very high, just try to get above the roof
ridgeline. And of course you will need to find / buy a satellite tracking
program. I recommend the InstantTrack 1.5. It's a simple easy to use
program, which can be purchased from Amsat.
http://www.amsat.org/amsat/instanttrack/
ISS ALPHA frequencies:
The Amateur Radio frequencies for ISS ALPHA have been posted.
Worldwide downlink for voice and packet: 145.800
Worldwide packet uplink: 145.990
Region 1 voice uplink: 145.200
Region 2 & 3 voice uplink: 144.490
You will need to dig out the manual for your radio and program in the following
frequency combinations. Note that some of the older FM mobile and
Walkie-talkie HT style radios over 15 years old may have some difficulty in
saving these combinations into memory. The channels listed below will help
you compensate for the speed of the space station, called Doppler. If the
smallest channel step your radio supports is 5k, then only program in channels
2, 5 and 8. If your radio supports the smaller 2.5k channel step, then
program in all channels listed. After you have determined your smallest
channel step supported by your radio, then program in the channels. You
can either use the procedures for storing ODD-Splits or you can reprogram your
repeater off set for each of the channels and then save the new combination in a
new memory location. This channel procedure has been successfully used on the
Mir Amateur Radio program for years and is the choice of usage for school
schedules (you do not want to fiddle with VFO's during a 10-minute pass).
I also recommend you program in all channels, no mater what part of the world
you live in.
The World Map ISS ALPHA location display used by the ISS ALPHA crew is not
located next to the Amateur Radio station.
Voice operations Region 2 & 3 (North and South America and Pacific)
Chan Receive Transmit
Offset (Meg)
1 145.802.5
144.488.5 -1.314
2 145.800.0
144.490.0 -1.310
3 145.798.5
144.492.5 -1.306
Packet operations Regions 1, 2 & 3 (Europe, North and South America and
Pacific)
Chan Receive Transmit
4 145.802.5
145.988.5 +0.186
5 145.800.0
145.990.0 +0.190
6 145.798.5
145.992.5 +0.194
Voice operations Region 1 (Europe)
Chan Receive Transmit
Offset (Meg)
7 145.802.5
145.198.5 -0.604
8 145.800.0
145.200.0 -0.600
9 145.798.5
145.202.5 -0.596
Usage Example:
Lets assume ISS ALPHA is approaching for a good 10 minute over head pass,
running Packet. When ISS ALPHA comes over the horizon the Doppler
frequency error will initially be 3.5k plus 145.990 = 145.993.5. This
means the frequency ISS ALPHA will appear to be transmitting on is 145.993.5.
Set your radio to channel #4 for the first 3 minutes of the pass.
Then for the next 3 minutes use channel #5 and for the last three minutes use
channel #6. Follow the same procedure for Voice operations. Since we
are using the Mode FM, we do not have to have our Transmit and receive frequency
exactly on frequency. We can be off frequency 1-2khz and still get reliable
Voice and Data. The MAREX-NA team has been using this procedure for 10
years with excellent results.
QSL card:
A QSL card is a post card, which you can request to confirm you made a two-way
or heard the crew on the Amateur Radio band. The QSL procedure for ISS
ALPHA is under development, please check the AIRSS web pages for the latest
updates and QSL procedures for ISS ALPHA.
Copyright 2000 Miles Mann, All Rights Reserved. This document may be
freely distributed via the following means - Email (including listservers),
Usenet, and World-Wide-Web. 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.
Images received from the MAREX-NA SSTV system on the Russian Space Station Mir
are considered public domain and may be freely distributed, without prior
permission.
DOSVIDANIYA Miles WF1F
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