[amsat-bb] 4M moon mission

Jim White jim at coloradosatellite.com
Fri Oct 24 04:25:49 UTC 2014


We used our modest EME station to receive and do a live feed of data 
from 4M into the online database for a couple of hours in the early 
evening here in Colorado.  Signal was plenty strong and we sent along a 
couple hundred packets, although sun noise was a bit high just off the 
spacecraft direction.  We could hear the JT65B tones in the speaker much 
of the time.  Sample below.  We will continue to feed in data as we have 
time.

TLEs on the mission web site are now OK in NOVA for tracking, even 
though NOVA shows an AOS of "CRASHED" because the orbit intersects the 
earth after the lunar loop around.

The signal levels shown in this WSJT capture are quite strong at up to -8dB.

My EME station is 2x15 element Yagis on 38' booms, horizontal, .8dB NF 
preamp on the short tower.  About 17dB gain overall.  Probably somewhat 
less since they are cut for 144.1 and this spacecraft is at 145.980.

224300 12 -13  2.509  143  1*      157V230A  +8C             1   0 0.0
224300  2   1/7                    157V230A  +8C             1 0
224400  4 -12  2.500  148  2*       POLITICS  OH             1   0 0.0
224400  1   1/9                     POLITICS  OH             1 0
224400  2   1/7                    157V230A  +8C             1 0
224500 11 -10  2.509  151  3*      RA56W4D5 S                1   0 0.0
224500  1   1/9                     POLITICS  OH             1 0
224500  2   2/8                    RA56W4D5 S                1 0
224600 15  -8  2.694  156  1*      B BELONGS TOD             1   0 0.0
224600  1   2/10                   B BELONGS TOD             1 0
224600  2   2/8                    RA56W4D5 S                1 0
224700 11 -11  2.507  159  3*      LX0OHB-4M0041             1   0 0.0
224700  1   2/10                   B BELONGS TOD             1 0
224800 11 -10  2.510  159  4*      150V235A  +8C             1   0 0.0
224800  1   3/11                   150V235A  +8C             1 0
224800 11 -10  2.510  159  4*      150V235A  +8C             1   0 0.0
224800  1   4/12                   B BELONGS TOD             1 0
224900 10 -11  2.694  161  1*      AY TO ONE OF              1   0 0.0
224900  1   4/12                   B BELONGS TOD             1 0
225000 16 -10  2.702  164  3*      R42Q+47GOY                1   0 0.0


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