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ZS6FB > SAT 20.01.03 07:59l 36 Lines 1483 Bytes #999 (0) @ AMSAT
BID : ANS-019.01
Read: DB0FHN GUEST
Subj: AO-27 Operations
Path: DB0FHN<DB0RGB<DB0FSG<DB0SIF<DB0AIS<DB0ZDF<DB0GE<HB9EAS<HB9AK<UA6ADV<
ZS6FB
Sent: 030120/0256Z @:ZS6FB.MPU.ZAF.AF #:54141 PACTOR-2: XFBB7.04 $:ANS-019.01
From: ZS6FB@ZS6FB.MPU.ZAF.AF
To : SAT@AMSAT
AMSAT News Service Bulletin 019.01 From AMSAT HQ
Silver Spring, MD. January 19, 2002
To All Radio Amateurs
BID: $ANS-019.01
Several stations have recently reported hearing AO-27's transponder
operating during unexpected periods of the orbit.
Mike, N1JEZ, provided the following explanation, "AO-27's orbit has moved
the satellite into a period of Full Orbit Solar Illumination. Due to this,
the Timed Eclipse Power Regulator or 'TEPR' method of timing the Transmitter
does not work. Therefore AO-27 cannot turn its transmitter on by itself and
can only be turned on by ground station command." Mike continued, "We will
try to turn it on for analogue work on the weekends when we are not
downloading telemetry. We are working on new flight software that will let
us upload a schedule for the transmitter. This will take us sometime to
write, debug, and upload to AO-27."
Mike requests that operators can best help by being patient during this
process. E-mails to the AO-27 command stations asking about when the
satellite will be on take time away from the software development. The
command team members are working quickly but carefully to get AO-27 back in
analogue mode.
In conclusion Mike noted that, "As a bonus to this orbit, during the seasons
of Full Orbit Solar Illumination, we will be able to have the transmitter on
at night
and for different parts of the world."
[ANS thanks Mike, N1JEZ, for the above information]
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