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SPUTNIK 41 YEARS 4th October 1957 - 4th October 1998
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| 3:1 scale model of Sputnik as shown at the AMSAT-UK Colloquium '97 - Images courtesy Reinhard DJ1KM, Hannover | |||
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Sputnik-41
/ RS-18 Silent
click
here for latest reports
Temperature
= +20° (1226 Hz)
Click here
| Latest News from AMSAT-FRANCE |
RS18 End of life (Dec. 11, 1998 ? )
Result of the survey about last lessage from RS18
| F6FAO | Dec. 10 - 19.35 UTC | RS18 still working |
| VE1AOE | Dec. 10 - 22.35 UTC | OK |
| VE1AOE | Dec. 11 - 00.07 UTC | Nothing |
| K5PK | Dec. 11 - 00.10 UTC | Half usual signal, orbit 467 |
| WB5RUE | Dec. 11 - 01.32 UTC | Noise on the frequency no audio |
| AP2TJ | Dec. 11 - 15.00 UTC | RS18 silent |
| F6FAO | Dec. 11 - 16.45 UTC | RS 18 silent but strange noise on the frequency |
Thank you to all people who has sent report measurement.
F6FAO
Sputnik-41 or RS-18
AMSAT-F has delivered
in September a new model of Sputnik Satellite ( Sputnik
41). This satellite will be on board of MIR the 27 of
october 1998.
The satellite has been financed by the "Aeroclub de
France" for his 100 birthday.
| Technical Caracteristic: |
| Size:
same as RS17 ( 20 cm diameter) Weight: 3,5 kg. TX: 150 mW with 4 circularized antennas Frequency: 145.8125 MHz +/- 5 KHz +/- doppler. Life time expected : between 20 and 30 days ( no solar cells). |
Message: the
cycle is one message of 5 secondes every 10 secondes. |
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| Wav | 1: Telemetry ( AF frequency versus internal temperature. See table ) |
| Wav | 2: French message: "1998 etait l'annee internationale de l'air et de l'espace" ( message read by Aurelie Boivin 12 years old, daughter of F6CWN and F6IFR) |
| Wav | 3: English message " 1998 was the International year of Air and Space" ( Read by Constantin Tsiolkvosky-Sambourov,14 years old, great-grandson of Tsiolkvosky inventor of rockets and son of Sergej Sambourov RV3DR) |
| Wav | 4: Russian message read by Michael Tsiokvosky-Sambourov, 12 years |
| Wav | 5: A record of the RS18 beep-beep |
| Wav | 6: French message " Programme spatial international de satellite educatif" (by Gerard Auvray F6FAO) |
| Wav | 7: English message: " International Space Scholl Sputnik Programm" read by Victor Kourilov chief of the project |
| Wav | 8: Russian message read by Sergev
Sambourov RV3DR ( grand soon of Tsiokvosky) and responsable of the amateur activity on MIR. |
| Wav | 9: Same as 5. |
| Telemetry of internal temperature: |
-38 degre: 179 Hz |
Visit the web site of F6BVP http://www.ccr.jussieu.fr/physio/f6bvp/ follow the link to SPOUTNIK 41
Gerard Auvray ( F6FAO)
| Latest News from Miles Mann, WF1F (MAREX-NA) |
Sputnik 41 or RS-18
The reports are
coming in from around the world, it seems that the little Sputnik
went silent around December 9, 1998. I have also been
monitoring for the past two days with out any success in hearing
the signal.
I am interested in hearing signals reports of exactly when it
went to sleep.
I would like to thank all of the people at Amsat-France, Energia
and all of the supporting groups for giving Amateur Radio
Satellite a little boost.
The Sputnik satellite was design to run approximately 30 days on
batteries only.
For more information about this project, please check out the
Amsat-France Web page and follow the links to the Sputnik
http://www.ccr.jussieu.fr/physio/f6bvp/
Please use the following QSL managers and follow the directions
for that Manager and included the following information:
Return Name
and Address, country
Date and time you heard RS-18 (use the UTC time and date)
Signal report (Best guess)
Radio Station and Antenna (optional)
This address is for
the SWL cards for the Sputnik-41 Amsat-France project.
AMSAT-F
QSL manager RS18
14 bis rue des Gourlis
92 500 Rueil-Malmaison
France
Send an ETSA + 1 IRC or Self Address Envelope, plus an IRC
coupon. Envelope size should be at least 10.5 x 15 cm.
| IF YOU WANT HEAR "BIP-BIP" READ THIS |
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The transmitter will be activated in october during an EVA (Extra Vehicular walking in space) from MIR. The life time will be between 1 and 2 months. |
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The Spoutnik will be launched be hand so it will not be very far from MIR. But Mir is doing frequently orbit adjustments. So we don't know how long the orbital elements will be the same that MIR. It will be a good exercise for students to try to compute the orbitals elements following the doppler. |
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The
transmit power is between 100 and
200 mW. The antenna polarisation is
circular, and will be right or left following how we will
see the satellite. The Spoutnik has no attitude
stabilisation, so we don't know how we will be in space. The modulation is FM and the BF [audio] signal is around 1.3 kHz and it will vary with the temperature. Another good exercise for students to measure the audio frequency and see the temperature. The RF signal sounds like a beep-beep as it is ON/OFF with a duty cycle of 5. The full cycle is around 4s. You can listen the beep-beep in FM position or SSB position. The sound is really nicer in SSB position, but if you want to measure the audio frequency you should be in FM. It will not be an easy exercise because it is a burst and the dynamic of frequency variation is low. |
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Equipment to receive the signal. In the best case you should be able to receive it on a handheld receiver with an antenna gain of 0dB, but as we will not know the satellite attitude in space it will be better to have a yagi with 10 dB gain (around 9 elements). |
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Frequency: 145.812 |
| Gerard Auvray, F6FAO Vice President AMSAT-F |
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