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G4ROA > WXSAT 04.08.03 11:06l 306 Lines 9652 Bytes #999 (0) @ EU
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Sent: 030804/0720Z @:GB7COV.#29.GBR.EU #:13128 [Coventry] $:1E0021G4ROA
From: G4ROA@GB7COV.#29.GBR.EU
To : WXSAT@EU
WEATHER SATELLITES
================
APT STATUS REPORT -- 4th August 2003
==============================
Satellite Frequency (MHz) Status Image Quality
NOAA 12 137.500 off see note
3.
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.
3. Due to VHF conflict (137.500 MHz) between NOAA 12 and 15, NOAA 12 is
off.
Now expected back on 12th August 2003.
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 -- 4th August 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.
CONTINENTAL GEOSTATIONARY WORLD WEATHER
=========================================
SATELLITE STATUS -- 4th August 2003
============================
CHANGES SINCE LAST REPORT.
GOES-9 position updated (yes it is now stated in °W !)
Europe & Africa
------------------
Satellite : Meteosat 7 (0°)
Data : HRI (digital) - 1694.5 MHz
Wefax (analogue) - 1691 & 1694.5 MHz
Operational : Present --- end 2005 (Note 1).
Satellite : MSG-1 (10° W)
Data : HRIT (digital) and LRIT (digital)
Operational : From January 2004 (Note 2).
Satellite operational overlap from January 2004 ---- end 2005.
Satellite : Meteosat 6 (10°E) (Note 4)
Data : HRI (digital) - 1691 MHz (Occasional wefax for ranging)
Operational : Standby for Meteosat 7 and Europe RSS.
North America
----------------
East.
Satellite : GOES 12 (75.1° W) (note 8.)
Data : GVAR (digital) - 1685.7 MHz
Wefax (analogue)/LRIT (digital) time shared -
1691MHz
Operational : Present .......
West.
Satellite : GOES 10 (135° W)
Data : GVAR (digital) - 1685.7 MHz
Wefax (analogue) - 1691 MHz
Operational : Present ---- Sometime in 2004
Satellite : GOES 11 (in storage)
Data : GVAR (digital) and LRIT (digital)
Operational : Sometime during 2004
Satellite operational overlap ---- to be confirmed.
Asia (Russian Operated Satellite)
--------------------------------------
Satellite : GOMS / Electro 2
Data : Not yet specified (HRIT/LRIT likely)
Operational : To be launched late 2005.
Asia (European Operated Satellite)
----------------------------------------
Satellite : Meteosat 5 (63°E) (Note 3)
Data : HRI (digital) - 1691 MHz
Wefax (analogue) -1691 MHz (from time to time)
Operational : Present....
Asia (Indian Operated Satellite)
-----------------------------------
Satellite : Metsat
Data : None available.
Operational : Present....
Satellite : Insat 3A (Note 5.)
Data : VHRR (digital) 2599 MHz
Operational : Present ............
Asia & Oceania (Japanese Operated Satellites)
-----------------------------------------------------
Satellite : GMS-5 (140° E) (Note 6)
Data : Wefax Relay only - 1691MHz (120kHz deviation)
Operational : Present ---- late 2004
Satellite : GOES 9 (204.2°W) (Note 9.)
Data : GVAR (digital) - 1685.7 MHz
Operational : Present ....... late 2004
Satellite : MTSAT-1R
Data : HiRID (digital) and Wefax(analogue)/LRIT(digital)
shared.
Operational : To be launched early 2004.(some now reporting mid 2004)
Satellite operational overlap ---- not yet applicable.
Asia & Oceania (Chinese Operated Satellites)
----------------------------------------------------
Satellite : Feng Yun 2B (105°E)
Data : SVISSR (digital) - 1687.5 MHz
Operational : Present ......
Satellite : Feng Yun 2C
Data : SVISSR (digital) and LRIT (digital)
Operational : To be launched early 2004
Satellite operational overlap ---- not yet applicable.
NOTES.
1. If necessary the satellite may operate beyond this date.
2. HRIT & LRIT data will not be disseminated through the satellite but
will
be provided via Hotbird satellite in DVB mode. See the Eumetcast status
report for more information.
3. Meteosat 5 now operates with only one channel.
4. Meteosat 6 is the standby satellite for Meteosat 7. Whilst in standby
is
being used to provide a 10 minute rapid scan service of Europe on HRI.
5. Insat 3A is a combined data and meteorological satellite.
6. 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
7. For those interested in EMWIN data, the following sats/frequencies
apply.
GOES7 (175 W) 1690.725 MHz.
GOES 10 (135 W) 1690.725 MHz
GOES 12 (74.5 W) 1690.725 MHz
For further info. there are many sources but the following is
particularly informative:-
http://iwin.nws.noaa.gov/emwin/user-intro.htm
8. Currently Wefax alignment problems make animation difficult. It is
hoped
this problem will be resolved soon.
9. GOES-9 is currently outside of it's 155.5E - 154.5E (204.5W - 205.5W)
longitude box. To prevent image shearing, the reference longitude was
modified from 155E (205.0W) to 155.25E (204.75W) at approximately
1910Z on July 11. The reference longitude of 155E (205.0W) will be
re-instated on September 5 at approximately 1910Z. A slight one time
perspective change may have been noticed by GVAR users.
(courtesy NOAASIS)
For updates/additions or errors (in this section) reply to
Dave Cawley Information@Time-step.com
EUMETCAST STATUS REPORT -- 4th August 2003
=====================================
Service Status Hotbird Satellite (13° E)
EARS On Transponder 129: 11096 MHz
RSS On Transponder 129: 11096 MHz
MSG On (Trial) Transponder 129: 11096 MHz
CHANGES SINCE LAST REPORT.
Foreign satellite relay trials commenced on MSG-1, 29th July 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: 07:13 on 04 Aug 2003
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