Håkan SM7WSJ rapporterar följande från HF-nätet den 21/12:
AO-51
AMSAT-NA VP Operations, Drew KO4MA reported on behalf of the
AO-51
Operations Team, “We are now back to the normal uplink
arrangement
of 145.920 and 435.300 for normal repeater use. We changed from
the
QRM mitigation experiment of operating via the 145.880 uplink back
to
this normal mode to enable low-power repeater QRP operation. The
QRP
repeater is now operational on 145.880 and 435.150.”
As a result of the
QRM investigation Drew said, “I’m convinced not
all of our problems are
related to the cordless phones. I heard tonight
whistlers, blowing in the
mike, and folks giving extended CQs. We are
working on finding the general
location of the cordless phones, but
it takes time. Then we’ll work at
shutting them down.
The AO-51 Operations Team provided results of their
QRM investigation
on and around the 145.920 uplink. There may be some low
level modula-
tion on some of the signals in the captured waterfall diagram.
It is
believed they may be from some of the same long distance phones
that
were plauging AO-27 and SO-50 a few years ago. Observations
indicate
the interfering signals are lost about the time the edge of the
foot-
print crosses the mid Atlantic states. Refer to this page:
http://i139.photobucket.com/albums/q305/glasbrenner/FO-29QRM-1.jpg
PC-SAT
Vår
E-post aktivitet lyckades inte då satelliten inte var samarbetsvillig.
(Eller dom operatörer som vägrade sluta sända mot den innan den var helt
återställd,,)
Bob, WB4APR provided an update on PCSAT-1 recovery
status from the
U.S. Naval Academy Satellite Laboratory. Bob wrote, “For the
first
time in 7 years, we were not able to fully recover PCSAT during
this
full sun period despite the efforts of a number of dedicated
volun-
teers around the world.”
PCSAT-1 is only operation when its
solar panels are illuminated by
sunlight. Full sun periods occur when passes
are at sunrise and
sunset to earth observers. PCSAT gets sun 24 hours a day
then, but
only on the side panels due to the orientation of the
satellite.
Ground station controllers were able to recover PCSAT-1 and the
weak
solar illumination allowed operation for generally an orbit
before
the power budget could not support the load.
Bob summarized,
“Anyway, this is not the last you will hear of PCSAT,
but there will probably
not be any more several week full sun, full
recovery periods as there have
been in the past. I really appreciate
all the efforts of so many operators.
So play packet on the ISS and
thanks again for all your efforts!”
En
riktigt God Jul till alla listmedlemmar med förhoppning om ett bättre
satellitår 2009
73 Håkan SM7WSJ