[net.ham-radio] AO-10 Beacon/Schedule Change

karn@mouton.UUCP (09/05/84)

Posted: Tue  Sep  4, 1984   5:12 AM GMT              Msg: CGIE-1892-7285
From:   VRIP
To:     AMSAT
Subj:   AO-10 Interim Operating Schedule  


An AO-10 interim operating schedule was put in effect on 03 Sep 84 by DJ4ZC.
The following was compiled based on a report by VE1SAT.
 
Interim Operating Schedule:
 
  MA Start   MA End    Mode
 
   190        031       Off
   032        099        B
   100        116        L
   117        189        B
   
Mode B replaces Mode L on Sundays. (B continuous 032-189, inclusive)
 
Beacon Schedule:

 
                 Mode B                            Mode L
      Minutes Past      Beacon               Minutes Past       Beacon
         Hour            Mode                   Hour             Mode
 
        00-04             CW                  00-04              RTTY
        05-14             PSK                 05-14              PSK
        15-19             RTTY                15-19              RTTY
        20-29             PSK                 20-29              PSK
        30-34             CW                  30-34              RTTY
        35-44             PSK                 35-44              PSK
        45-49             RTTY                45-49              RTTY
        50-59             PSK                 50-59              PSK

 
It is suggested that, based on post-eclipse analysis, it may be possible to
expand the transponder operating schedule beyond that described above.  The
health of the spacecraft (batteries in particular) shall be the determining
factor.  The current perigee eclipse period commences now and lasts until
mid-October.  The eclipses reach maximum duration on/about 21 Sep when the
duration will reach 1.16 hours +/-.  DJ4ZC says a further schedule adjustment
will be made in October (presumably) at the completion of the eclipse season.
 
CW is at 13 wpm; RTTY is 170 Hz 50 baud FSK Baudot; PSK is 400 baud ASCII.