RS-20 (Mozhayets) Launched
(28 Nov 2002) JoAnne Maenpaa Relay Message From Russia - RS-20 Launched
(28 Nov 2002) Paul Willmott Re: Relay Message From Russia - RS-20 Launched
(28 Nov 2002) Graham Shirville Re: Relay Message From Russia - RS-20 Launched
(28 Nov 2002) JoAnne Maenpaa Re: Relay Message From Russia - RS-20 Launched
(28 Nov 2002) Keith O'Brien Mozhayets Keps
(28 Nov 2002) Keith O'Brien RS-20 Telemetry Format
(29 Nov 2002) Chris Jackson Re: Relay Message From Russia - RS-20 Launched
(30 Nov 2002) Ib Christoffersen New Russian satellite heard ?
(30 Nov 2002) Chris Jackson Re: New Russian satellite heard ?
( 1 Dec 2002) Robert Turlington RS20 today
( 2 Dec 2002) Mineo Wakita RS-20 heard !
( 2 Dec 2002) Mineo Wakita RS-20 CW wave file
( 2 Dec 2002) Cliff Buttschardt 1200/2400 hertz Mozhaetz telemetry
( 2 Dec 2002) Greg D. Re: 1200/2400 hertz Mozhaetz telemetry
( 2 Dec 2002) Howard Long Re: 1200/2400 hertz Mozhaetz telemetry
( 2 Dec 2002) Howard Long RS-20 Heard Finally!
( 4 Dec 2002) Mineo Wakita RS-20 CW today
( 6 Dec 2002) Mineo Wakita Re: AlSat-1 / Mozhayets keps
( 6 Dec 2002) Chris Jackson Re: AlSat-1 / Mozhayets keps
( 7 Dec 2002) Richard W L Limebear RS-20 Telemetry Equations
( 8 Dec 2002) Don Woodward RS-20 - very interesting CW
(10 Dec 2002) Mineo Wakita Re: RS-20 - very interesting CW
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Subject: [amsat-bb] Relay Message From Russia - RS-20 Launched
From: "JoAnne Maenpaa"
Date: Thu, 28 Nov 2002 12:57:25 -0600
Dear Fellows,
At November 28, 2002 at 09:41 moscow time from Plesetsk were launched
two satellites - Algirian AlSat-1 and Russian "Mozhaetz" sirca RS-20 !
Please listen RS-20 at 435.319 Mhz and 145.828 Mhz. The telemetry
signal format almost the same as RS-21 (Kolibri-2000).
Any reports are appreciated on addressses as plis(@)kaluga.ru
and zaitzev(@)izmiran.rssi.ru.
Regards and 73 ! UA3XBU and RW3DZ
--------
Subject: Re: [amsat-bb] Relay Message From Russia - RS-20 Launched
From: "Paul Willmott"
Date: Thu, 28 Nov 2002 20:00:03 -0400
IntID/Name CatNo Source period Incl Apogee Perigee RCS
------------ ----- ------ ------ ------ ------ ------- --------
2002-054A 27559 AG 0.0 0.0 0 0 0.0000
ALSAT-1 Launched (2002/11/28)
2002-054B 27560 CIS 0.0 0.0 0 0 0.0000
MOZHAYETS Launched (2002/11/28)
2002-054C 27561 CIS 0.0 0.0 0 0 0.0000
SL-08 R/B Launched (2002/11/28)
ALSAT-1
1 27559U 02054A 02332.58945067 .00014902 00000-0 34957-2 0 35
2 27559 98.2387 217.3033 0044901 72.7303 287.8426 14.53954521 46
MOZHAYETS
1 27560U 02054B 02332.86497891 -.00019965 00000-0 -47472-2 0 37
2 27560 98.2411 217.5728 0044302 75.5447 285.0613 14.53325574 86
SL-08 R/B
1 27561U 02054C 02332.86526705 -.00016587 00000-0 -40060-2 0 49
2 27561 98.2393 217.5716 0042773 78.9410 281.6612 14.52594358 88
--------
Subject: Re: [amsat-bb] Relay Message From Russia - RS-20 Launched
From: "Graham Shirville"
Date: Thu, 28 Nov 2002 21:01:58 -0000
This is from the Pravda website
The spacecraft Mozhayets, weighing 90 kilogrammes, has been developed
and manufactured at the NPO of Applied Mechanics named after Academician
Reshetnev(Zheleznogorsk, Krasnoyarsk Territory, Eastern Siberia), helped
by instructors and personnel of the Mozhaisky Military Space Academy in
St Petersburg. It is designed to train students of higher military
educational establishments of the Space Forces in spacecraft operating
methods and analysis of telemetric information arriving from space.
Both satellites are scheduled to be put into a synchronous solar orbit,
at an altitude of about 700 kilometres from the Earth.
And I also read that the most powerful ever Ariane 5 is due to launch in
a couple of hours with 2 big satellites and 1960 kilogrammes of dummy
ballast on board......
sigh
Graham G3VZV
--------
Subject: Re: [amsat-bb] Relay Message From Russia - RS-20 Launched
From: "JoAnne Maenpaa"
Date: Thu, 28 Nov 2002 15:09:42 -0600
> And the new kepler??
I haven't seen the keplerian elements yet. Here are my observations
from the Chicago area (UTC-6). I copied a digital format signal at
1920 UTC and 2100 UTC on 28 November on 145.828 MHz so it seems to be
a ~100 minute orbit.
I don't have anything to decode the signal so I can't positively
identify it.
(I left a receiver sitting on 145.828 hoping to hear something.)
73 de JoAnne WB9JEJ
--------
Subject: [amsat-bb] Mozhayets Keps
From: "Keith O'Brien"
Date: Thu, 28 Nov 2002 23:24:51 +0000
>From the NASA/GSFC Orbital Information Group Web Site. I have included
ALSAT-1 in case there is some early confusion of who's who up there.
ALSAT-1
1 27559U 02054A 02332.58945067 .00014902 00000-0 34957-2 0 35
2 27559 98.2387 217.3033 0044901 72.7303 287.8426 14.53954521 46
MOZHAYETS
1 27560U 02054B 02332.86497891 -.00019965 00000-0 -47472-2 0 37
2 27560 98.2411 217.5728 0044302 75.5447 285.0613 14.53325574 86
Good Hunting... Keith N4ZQ
--------
Subject: [amsat-bb] RS-20 Telemetry Format
From: "Keith O'Brien"
Date: Thu, 28 Nov 2002 23:55:21 +0000
Alexander N. Zaitzev wrote:
Please listen RS-20 at 435.319 Mhz and 145.828 Mhz. The telemetry
signal format almost the same as RS-21 (Kolibri-2000).
In case you have forgotten what the RS-21 telemetry format looked like,
take a peek at:
http://www.marex-na.org/fileshtml/rs21sat.html
73 Keith N4ZQ
--------
Subject: RE: [amsat-bb] Relay Message From Russia - RS-20 Launched
From: Chris Jackson
Date: Fri, 29 Nov 2002 21:43:31 -0000
It seems possible that the elements for AlSat-1 and Mozhayets are
swapped.
> From matching initial magnetometer data with IGRF, the elements for
> 27560 give the best fit for AlSat-1.
Cheers
Chris G7UPN
--------
Subject: [amsat-bb] New Russian satellite heard ?
From: "Ib Christoffersen"
Date: Sat, 30 Nov 2002 20:50:38 +0100
Hi all,
I think I heard the new Mozhayets satellite during the pass
here at approximately 1930 UTC from Copenhagen.
At 435.319 MHz there was a distinct telemetry like downlink, which
I seem to recall from RS-21 - but not sure. I believe I have heard
something like that before, when RS-21 was in reach from Moscow.
The spelling of the name changes somewhat from source to source -
but anyway it seems to be there.
The signal was best using the keps for Alsat-1 as pointed out
by Chris.
I did not hear anything on 145.828 MHz at the same time.
What are they flying on that satellite ?????
--------
Subject: RE: [amsat-bb] New Russian satellite heard ?
From: Chris Jackson
Date: Sat, 30 Nov 2002 22:24:49 -0000
I heard that Mozhayets was a navigation satellite, so not sure what
the amateur payload is. I've got a photo of it sitting on the launch
vehicle next to AlSat-1 and it's got what is possibly a turnstyle
antenna on top (although I don't actually know which way up it flys!).
If it is the antenna, then I'd estimate it to be around 1m across
(basically the diameter of the spacecraft).
We're reasonably sure that the keps are swapped. We've got quite a lot
of navigation data down now from AlSat and 27560 provides the best fit.
Cheers
Chris G7UPN
--------
Subject: [amsat-bb] RS20 today
From: "Robert Turlington"
Date: Sun, 01 Dec 2002 23:13:50 +0000
Hi All
copied RS20 on 435.319 Mhz +- doppler this evening between 2155 & 2205
utc with good signals. The telemetry consists of two audio tones 1200
& 2400 Hz but could not decode it ( sounds a bit like UO11 tlm to me)
Regards Robert G8ATE
--------
Subject: [amsat-bb] RS-20 heard !
From: Mineo Wakita
Date: Mon, 02 Dec 2002 08:55:38 +0900
I heard good CW signal of RS-20 by using ALSAT-1 keps
on 435.3185MHz +/- doppler, every approximately 20 seconds,
at 23:09:00-23:22:00 UTC, 1 Dec 2002.
> EA3 T 5A 94 E E 07 EB W49
^^ ^^ ^^ ^^
ALSAT-1
1 27559U 02054A 02335.09251633 .00000244 00000-0 68138-4 0 138
2 27559 98.2391 219.7660 0044886 65.0039 69.3482 14.53940722 409
--------
Subject: [amsat-bb] RS-20 CW wave file
From: Mineo Wakita
Date: Mon, 02 Dec 2002 12:30:34 +0900
RS-20 CW audio file
00:46:00-01:00:00 UTC, 2 Dec 2002
105 seconds,
wav 2322 KB http://www.ne.jp/asahi/hamradio/je9pel/21202r20.wav
mp3 527 KB http://www.ne.jp/asahi/hamradio/je9pel/21202r20.mp3
--------
Subject: [amsat-bb] 1200/2400 hertz Mozhaetz telemetry
From: Cliff Buttschardt
Date: Mon, 02 Dec 2002 01:49:43 +0000
A number of members have indicated that the telemetry on the Russian
Mozhaetz satellite sounded like two tone FSK, 1200 and 2400 hertz.
This might be the very old "Kansas City standard" used by computer
people when only tape recorder data storage was available economically.
This standard was most forgiving and easy to implement. We will have to
look back many years for information on this one!! Cliff K7RR
--------
Subject: Re: [amsat-bb] 1200/2400 hertz Mozhaetz telemetry
From: "Greg D."
Date: Sun, 01 Dec 2002 23:11:02 -0800
Yikes, this sure stired up a cloud of brain dust!
For those who don't know, the Kansas City Standard was used
in the Barnstorming early days of personal computing, before
what we now call a PC was invented. It was used to record
programs and data on audio cassettes; hard disks were typically
the size of washing machines, and the floppy disk (8 inch!) was
too still expensive for most.
As I recall, the format used 8 cycles of 2400 hz for a "1", and
4 cycles of 1200 hz for a "0". A simple modem did the decoding.
The resulting 1200 baud data stream was sent in to a standard
async serial port. You would literally "play" your program from
the tape into your computer to load it. It worked quite well.
They even published software on thin plastic sheets that you
put on your phonograph at 45 rpm. Called them "Floppy ROMs"...
We now return you to the 21st century...
Greg KO6TH
--------
Subject: RE: [amsat-bb] 1200/2400 hertz Mozhaetz telemetry
From: "Howard Long"
Date: Mon, 2 Dec 2002 20:31:47 -0000
Cliff said
> At least you remember how this antiquated
> system used to work. I do remember it was the
> most forgiving, most
> fail proof slow speed data system ever!
Then I must've been doing it wrong ;-) but I was very young then.
I'm a little confused (and frustrated) with no antennas at the moment! The
telemetry I heard courtesy of JE9PEL was CW. Is there another mode or
frequency on this bird with the AFSK telemetry yet?
IIRC the Kansas City Interface used to be available with the original 300bps
and also a later 1200bps version. The parameters I originally suggested for
MixW were for 1200bps.
Here's an updated version.
First set to RTTY mode and check that it works OK.
In the Mode->Mode Settings.
o Set the RX frequency to 1800;
o Over-key the Shift to 1200;
o Over-key the baud rate to 1200 or 300 as appropriate;
o Set the Charset to ASCII8;
o You may or may not find the Inverted bit might be needed.
--------
Subject: [amsat-bb:64134] RS-20 Heard Finally!
From: "Don Woodward"
Date: Mon, 2 Dec 2002 21:50:32 -0500
I just heard RS-20 at 0214 UTC (Tuesday December 3, 2002) on a very low
pass (maximum 3 degrees). It was very loud. Sounded like random CW -
I have posted a MP3 file on my satellite sounds page on my website.
I have a higher pass coming up in less than two hours - should get some
better audio then.
73's
Don Woodward
KD4APP
--------
Subject: [amsat-bb:64178] RS-20 CW today
From: Mineo Wakita
Date: Wed, 04 Dec 2002 20:27:05 +0900
I heard today a few broken pieces CW from RS-20 every 3 minutes,
though I heard yesterday the good CW beacon every 20 seconds.
I try again to hear it tomorrow. (435.319MHz +/-doppler)
--------
Subject: [amsat-bb:64178] Re: AlSat-1 / Mozhayets keps
From: Mineo Wakita
Date: Wed, 06 Dec 2002 19:01:00 +0900
Chris Jackson wrote at 21:50:53, 4 Dec 2002,
> Just a warning - NORAD have now swapped the keps for these two objects
> so the names are now correct. If you've been tracking object 27559,
> you will need to change to 27560.
> Chris G7UPN
MOZHAYETS
1 27560U 02054B 02338.78315339 .00001109 00000-0 27084-3 0 116
2 27560 98.2397 223.3975 0044784 53.9395 306.5934 14.53950776 942
I confirmed that MOZHAYETS keps was tracking correctly this object,
but I did not hear today CW even if I used the keps above, although
I heard it a few days ago by using ALSAT-1 keps.
--------
Subject: RE: [amsat-bb] Re: AlSat-1 / Mozhayets keps
From: Chris Jackson
Date: Fri, 6 Dec 2002 10:12:33 -0000
To: Mineo Wakita
The objects were swapped on Wednesday evening at NORAD. This may take
some time to filter through all the places where elements are dissemin_
ated. If you're using old elements (older than epoch time on day 338)
then they will still be the other way around.
This observation is confirmed from on-board navigation sensors on AlSat
(GPS and NavMag) and given that these two objects are a long way apart
and we'retracking using a 3.7m dish, there's little doubt that we're
tracking the correct object...
73, Chris G7UPN
--------
Subject: [amsat-bb] RS-20 Telemetry Equations
From: Richard W L Limebear
Date: Sat, 07 Dec 2002 18:30:54 GMT
This came in from Moscow (Tnx Max White):
Mozhayets frequencies are 435.319 and 145.828 MHz, callsign is RS 20.
Table for decoding telemetry is as follows:
Name Limits Decoding Assignment
RS 20 The callsign
UBS N=100:170 U=N / 10 Volts On board voltage
IBS N=10:250 I=N / 100 Ampers On board current
USUN N=0:180 U=N / 10 Volts Charge voltage from solar battery
ISUN N=0:180 I=N / 100 Ampers Charge current from solar battery
ITXA N=0:170 I=N / 100 Ampers D.C. current of the 435 MHz Tx
PTXA N=0:70 P=N / 10 Watts UHF power of the 435 MHz Tx
TTXA N=50:190 T=N - 100 deg C Temperature of the 435 MHz Tx
ITXB N=0:150 I=N / 100 Ampers D.C. current of the 145MHz Tx
PTXB N=0:70 P=N / 10 Watts VHF power of the 145MHz Tx
TTXB N=50:190 T=N - 100 deg C Temperature of the 145MHz Tx
TEXT N=30:250 T=N - 100 deg C Temperature of the outer case
TINT N=30:190 T=N - 100 deg C Temperature of the inner case
TOR N=10:250 T=N - 100 deg C Temperature of the Earth sensor
UOR N=0:100 U=N / 10 Volts Temperature of the Sun sensor
MTX N=0:255 Table of operational modes. The housekeeping info.
MRX N=0:255 Table of operational modes. The housekeeping info.
RS 20 The callsign.
http://www.arrl.org/news/stories/2002/12/06/3/
--------
Subject: [amsat-bb] RS-20 - very interesting CW
From: "Don Woodward"
Date: Sun, 8 Dec 2002 11:30:25 -0500
This morning at 1520 UTC I captured the following CW from RS-20 on the 70cm
beacon frequency, and decoded it using Hamscope in CW mode...
te0 s gwi dieneori e of n auab en to8 2092 weight of the ia t lliteieti
The audio capture is at:
http://www.sunsunsun.net/kd4app/amsat/RS20-6.mp3
73's
Don Woodward
KD4APP
--------
Subject: [amsat-bb] Re: RS-20 - very interesting CW
From: Mineo Wakita
Date: Wed, 10 Dec 2002 20:28:00 +0900
I heard many interesting CW signals from Mozhayets (RS-20).
She is now transmitting continuously CW at intervals of 2 minutes.
And I adjusted the signals with much doppler shifts by hand, and
I saved the audio as a mp3 file.
[00:22:00-00:35:00 UTC, 10 Dec 2002]
> 20KM IIFLINATION OS, SOA S PERIODIS 9MIN FQ CQCQ DE RS20
[02:04:00-02:10:00 UTC, 10 Dec 2002]
> ITOF NOVEMBER28 2002 WEIGHT OF THE SATELLITE IO U OI S
> FORM IS CLOSE TO SPHERICAL ABOUT 800MMINDIAA EOR , HO A,
> NONBOARD EQUIPMENT IS LOCATED IN THE HERMETICCA ISTER,
> O F CQ DE RS20 THE SIZ ...
24 seconds, 119 KB
http://www.ne.jp/asahi/hamradio/je9pel/21210r20.mp3
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