[sarex] Spoutnik 41 temperatures

[Andy Thomas <70374.440@xxxxxxxxxxxxxx>]

Following tones recorded on 145.815 overnight. I assume this is doppler'd
slightly high.

All frequencies in Hz.The tone frequency is indicative of the satellite
temperature ( see the web site for details).

I didn't stay awake all night so set the system to record when the squelch
opened. For arguement's sake here are the Mir predicted pass times.


                                                                           
                         MIR pass times were:
11/12 November   1st pass 1259.6Hz                          00:20 - 00:29
                                                      1250.9

                                   2nd pass 1248.3                         
      01:54-0204
                                                      1239.4

                                   3rd pass  1242.3                        
       03:30-03:40  max el 77.6 degrees
                                                      1233
                                                      1223.7

                                   4th pass  1228.8                        
         05:05-05:15
                                                      1219.7
                                                      1210

                                  5th pass   1208.3                        
          06:40-06:49
                                                      1199.9
                                                      1194.5

12/13 November   - very difficult to copy, I wonder if the sputnik is
occluded by mir on approach?
At first I thought there was nothing recorded at all.

               only observation   1200.7Hz    don't have the obs time but
mir's maximum elevation                                         was abt
02:30utc  75.3 degs


                                        Mir times utc
13/14 November  1st pass 1263Hz         23:41-23:49

                      2nd pass 1240Hz           01:15-01:25

                      3rd pass 1231.5           02:50-03:00  max el 77.5
deg

                     4th pass can't analyse                            
04:25-04:35

                     5th pass  1211.2                                      
   06:01-06:09
                                                     1196.7

These observations are taken from.WAV files recorded automatically with
Recall by Sagebrush (the recording starts when the squelch opens) and then
analyised with Syntrillium's Cool Edit - the "most prominent frequency" is
displayed following a FFT..

Particularly on the first night the frequencies doppler down in each pass,
however, the mean figure - or the lowest one - indicates a steadily colder
temperature as the orbit progresses into the early hours of the morning. 

Rx is  a kenwood HT,FM, and a 5 ele yagi fixed in elevation to about 20deg.


The clever stuff is in the satellite  :  félicitations à l'équipe -
congratulations to the team! 


andy G0SFJ
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