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OPAL Beacon



I received again some digital beacons from OO-38(OPAL).
She transmitted them every 10 seconds with 437.100MHz
(+/- doppler), and 9600bps_FSK.  Time is UTC:


KF6RFX>CQ [11 Sep 2000  23:50:00] <UI R>:OPAL 19:2888678815 <01>
KF6RFX>CQ [11 Sep 2000  23:50:10] <UI C>:OPAL 19:2888678815 <01>
KF6RFX>CQ [11 Sep 2000  23:50:20] <UI R>:OPAL 19:2888678815 <01>
KF6RFX>CQ [11 Sep 2000  23:50:30] <UI R>:OPAL 19:2888678815 <01>
KF6RFX>CQ [11 Sep 2000  23:50:40] <UI R>:OPAL 19:2888678815 <01>


In the URL, http://ssdl.stanford.edu/opal/Operations/beacon.html
'Opal Beacon Summary' say :

> Beacon 1 - An AX.25 packet beacon containing Opal's current 
> time stamp and a 2 bit summary of Opal's health.
> Example beacon:  OPAL 0:0009948696 <01>
> 
> "0:0009948696" is the time stamp. It is the number of clock
> ticks since last hard CPU reset onboard Opal. The number of
> seconds can be calculated by:
> 
>         seconds = (number of ticks> / ( 4096 )


Q1. I don't know why the above today's data doesn't change.
Q2. Do the next two bit health states beacon are right ?

> 00 = all systems working nominal 
> 01 = voltage to high 
> 10 = temperature to high 
> 11 = voltage to low 

----------------------------------------------
Name : JE9PEL/Mineo Wakita, Member of JAMSAT
Mail : je9pel@jamsat.or.jp
URL  : http://www.ne.jp/asahi/hamradio/je9pel/
QTH  : Yokohama Japan, GL:PM95TJ
Date : Sep 12, 2000
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