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CX2SA > SATTV 13.09.11 02:20l 87 Lines 3910 Bytes #999 (0) @ WW
BID : U2RPT156.CWV
Read: GUEST
Subj: OSCAR-11 Report September 1, 2011
Path: IZ3LSV<IK6ZDE<OK0NAG<OK0NMA<OK2PEN<CX2SA
Sent: 110913/0104Z @:CX2SA.LAV.URY.SA #:26873 [Minas] FBB7.00e $:U2RPT156.CWV
From: CX2SA@CX2SA.LAV.URY.SA
To : SAT@WW
OSCAR-11 Report September 1, 2011
Clive Wallis G3CWV says excellent signals from OSCAR-11 have been reported
from stations located around the world.
This report covers the period from 27 April to 01 September 2011.
The satellite has continued to operate in a very predictable way since the
last report, and no changes have been observed.
During this time the satellite has been heard reliably during its ten-day
transmission periods. Excellent signals have been reported from stations
located around the world, and good copy obtained from decoded telemetry
frames.
The easiest way to check whether OSCAR-11 is operational is to look at the
General Satellite Status website http://oscar.dcarr.org/index.php . You can
also calculate the operating schedule from the last switch-off time, which
was 26 August 2011 at 08:00 UTC (approx), using 10.35 days off followed by
10.35 days on.
Reception reports have been received from David VE3SB, Jerry WB5LHD, Toby
MM0TOB, Colin VK5HI and Lee M0HOK. Many thanks to all and those who posted
to the status website.
Although eclipses occur during every orbit, the evening passes over the UK
were mostly clear of eclipses, owing to the longer hours of daylight during
the Summer months. This resulted in stronger signals during the evening
passes. However, as winter approaches eclipses will now start to affect the
evening passes.
The on-board clock continues to gain, 26 seconds during the current
reporting period, and 83 seconds since regular transmissions started at the
end of August 2010. There is however a large accumulated error of 308.54339
days slow. This was caused mainly by the clock stopping during eclipses,
when there was also an unknown drain on the power supply. The units of the
least significant digit correspond approximately to seconds (0.86 seconds
actually).
The VHF beacon frequency is 145.826 MHz. AFSK FM ASCII Telemetry. The
satellite is operating in the default mode, with a cycle time of 20.7 days.
10.35 days on followed by 10.35 days off.
At the present time, while OSCAR-11 is operating in a predictable way, I no
longer need direct reports or files by e-mail. However, could all listeners
continue to enter their reports on the general satellite status website.
This is a very convenient and easy to use facility, which shows the current
status of all the amateur satellites, and is of use to everyone.
Reports around the expected times of switch-on and switch-off are of special
interest, especially for times 12:00 - 17:00 and 22:00 - 07:00 UTC, when the
satellite is out-of-range in the UK . The URL is
http://oscar.dcarr.org/index.php
A longer version of this report report is available on my website, and new
listeners to OSCAR-11 should read this for further information. The URL is
http://www.g3cwv.co.uk/oscar11.htm . This page contains a links to the
longer report, a short audio clip to help you identify the satellite and a
file of the last telemetry received. The website also contains an archive of
news & telemetry data which is updated from time to time, and details about
using a soundcard or hardware demodulators for data capture. There is also
software for capturing data, and decoding ASCII telemetry.
If you place this bulletin on a terrestrial packet network, please use the
bulletin identifier $BID:U2RPT156.CWV, to prevent duplication.
73 Clive G3CWV
xxxxx@amsat.org (please replace the x's by g3cwv)
UoSAT-2 / OSCAR-11 on YouTube
http://www.southgatearc.org/news/february2009/
oscar11_digitalker_video.htm
OSCAR-11
http://www.amsat.org/amsat/sats/n7hpr/uo11.html
OSCAR-11 Real Time satellite Tracking
http://www.n2yo.com/satellite/?s=14781
AMSAT-UK publishes a colour A4 newsletter, OSCAR News, which is full of
Amateur Satellite information. Join online at http://tinyurl.com/JoinAMSAT-UK/
AMSAT-UK: http://www.uk.amsat.org/
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