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G4ROA > WXSAT 26.05.03 09:42l 186 Lines 5989 Bytes #999 (0) @ EU
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Subj: WX Sat status report 26/5
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Sent: 030526/0654Z @:GB7COV.#29.GBR.EU #:4939 [Coventry] $:E00318G4ROA
From: G4ROA@GB7COV.#29.GBR.EU
To : WXSAT@EU
WEATHER SATELLITES
================
APT STATUS REPORT -- 26th May 2003
=============================
Satellite Frequency (MHz) Status Image Quality
NOAA 12 137.500 on good
NOAA 14 137.620 off
NOAA 15 137.500 on good
NOAA 17 137.620 on good
CHANGES SINCE LAST REPORT
None.
THIS WEEK'S POSSIBLE EVENTS.
None expected.
NOTES.
1. NOAA 9 was permanently deactivated some years ago and is tumbling
freely. Unfortunately it has a sporadic carrier on 137.500 (varies
quickly
according to orientation) and can cause interference to NOAA 12 and
NOAA 15.
2. NOAA 16's APT transmission system failed a few months after launch.
LAUNCHES.
Sich-1M NET December 2003. (thanks to Ian Deans for info.)
The next known satellite launch with APT is NOAA N scheduled for NET June
30th 2004.
Douglas Deans.
Dunblane.
Scotland.
DIGITAL STATUS REPORT -- 26th May 2003
================================
CHANGES SINCE LAST REPORT.
None.
THIS WEEK'S EVENTS.
None expected.
Satellite Frequency Mode Remarks
(MHz)
NOAA 12 1698.0 HRPT Good signal
NOAA 14 1707.0 HRPT Good signal (see note 5)
NOAA 15 1702.5 HRPT* Backup channel, weaker signal
NOAA 16 1698.0 HRPT* Strong signal
NOAA 17 1707.0 HRPT* See note 6.
FengYun 1C 1700.4 CHRPT Weak signal, use dish 90cm.
FengYun 1D 1700.4 CHRPT Good signal.
Seastar 1702.5 SeaWifs signal OK
encrypted
NOTES.
1. At the NOAA 17 frequency of 1707 MHz occasional interference may be
expected from NOAA 14 at latitudes above 80 degrees. Erratic behaviour of
the inactive NOAA 9 also has proven to be a source of interference at
higher
latitudes. NOAA 9 follows a similar track to 17. (Thanks to F. Valk)
2. If you have a good LNA and analogue decoder (Timestep for example)
all sat's with "Good signal" or better can already be received using
a 1.5M helicalbeam (RIG Journal 64) or a small dish (60 to 80cm) with
helical feed.
3. * These sat's have channel 3A/B which allows the composition of
almost true-colour images of daylight passes using R3G2B1
colour scheme. For more info on colouring see RIG Journal 69.
4. ~ 10 Channel imager, use colour scheme R1G9B7 or R1G2B7 for
daylight passes to get near true colour images.
5. Due to continuing problems with AVHRR scan motor, image reports are
mixed. There are times when there is useable data, but reports
suggest
that for the majority of passes data is unusable.
6. Problems have developed with STX-3 (1707 MHZ). Power has dropped from
approx. 8W to about 2.4W resulting on a greatly reduced signal
strength.
Arne van Belle, WERKGROEP KUNSTMANEN
Co-ordinator Radio Observers (www.kunstmanen.nl)
Douglas Deans.
My thanks to Lawrence Harris for updates.
GEOSTATIONARY WEFAX STATUS REPORT -- 26th May 2003
===============================================
CHANGES SINCE LAST REPORT
Changes to GMS 5. (see note 2)
THIS WEEK'S EVENTS
None expected.
Goes West (W America). Wefax 1691.0 MHz 135 W
Goes East (E America). Wefax 1691.0 MHz 75 W. Test transmissions of
LRIT to commence April 2003.
Meteosat 7 (Europe). Wefax 1691.0 & 1694.5 MHz 0 W
Meteosat 5 (India). Wefax 1691.0 MHz (shared usage) 63 E
inclined +/- 4.4 degrees.
MSG-1 HRIT/LRIT dissemination will now be done via the Eumetcast service
due to the loss of the power amplifier SSPA-C. Reports
for
this will be carried in the Eumetcast Status Report
section
below.
INSAT (India) 2599.225 MHz WEFAX 74 E ?
GMS-5 (Japan/Australia) Wefax 1691.0 MHz (120 KHz deviation) 140 E
See note 2.
NOTES.
1. GOES-12 has replaced GOES-8 as the GOES-East operational
spacecraft on 1st April 2003 at 18.15Z. GOES 12 is now in position at
74.5°W. GOES 8 has commenced its westward drift from 75° W.
2. GMS-5 ceased VISSR transmissions on 22nd May 2003. Wefax is now
derived from GOES-9 (155° E) GVAR and processed to a 140° aspect
through GMS-5. For further information see :-
http://www.jma.go.jp/JMA_HP/jma/indexe.html
(My thanks to Mike Kenny for this info.)
For updates/additions or errors (in this section) reply to
Dave Cawley Information@Time-step.com
EUMETCAST STATUS REPORT -- 26th May 2003
====================================
Service Status Hotbird Satellite (13° E)
EARS On Transponder 129: 11096MHz
RSS On Transponder 129: 11096MHz
MSG On (Trial) Transponder 129: 11096MHz
CHANGES SINCE LAST REPORT.
LRIT trials (MSG-1) have been put back until 11th June 2003.
THIS WEEK'S POSSIBLE EVENTS.
None expected.
My thanks to David Taylor for his help with reports.
Any reports for this section should be sent to :-
Douglas Deans douglas@dsdeans.freeserve.co.uk
NOTES.
1. For further information on the Eumetcast service see :-
David Taylor's web site
http://www.satsignal.net => Weather Satellites, ATOVS or
MSG Data Manager.
or Eumetsat's web site
www.eumetsat.de
==============================================
73's - Adrian, G4ROA @ GB7COV
Message timed: 06:50 on 26 May 2003
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Member of:
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QTH Loc - IO92gj
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E-Mail: G4ROA@AOL.com
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