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Polar APT/LRPT Report

POLAR APT/LRPT REPORT – 13th July 2020.
==============================================
CHANGES SINCE LAST REPORT.
None.
 
THIS WEEK'S POSSIBLE EVENTS.
None expected.
 
Satellite    Frequency (MHz)     Status   Image Quality
 
NOAA 15        137.620  (APT)      on   periods of synch problems
NOAA 18        137.9125 (APT)      on         good
NOAA 19        137.100  (APT)      on         good
Metop-A        137.100  (LRPT)     off      see Note 1
Metop-B                No LRPT service
Metop-C                No LRPT service
Meteor M N2    137.100 (LRPT)      on
                QPSK, 72k
Meteor M N2-2  137.900 (LRPT)      off     (see Note 7).
                OQPSK,  72k
 
NOTES.
1. Metop-A's A-side LRPT transmitter has failed. Currently the redundant
   B-side transmitter is off until further notice (No further service
   expected due to interference with HIRS instrument).
 
2. NOAA 14 was decommissioned on 23rd May 2007.
 
3. NOAA 12 was decommissioned on 10th August 2007.
 
4. NOAA 17 was decommissioned on 10th April 2013.
 
5. NOAA 16 was decommissioned on 9th June 2014.
 
6. Elements are available from :-
   http://www.space-track.org and
   http://celestrak.com/NORAD/elements/
 
7. Meteor M N2-2 has likely been hit by a micro-meteorite. It has
    changed orbit and been de-pressurised. Although under control again
    the thermal balance is an issue and main problems are overheating of
    the batteries which keep switching to backup. LRPT transmitter cannot
    operate under those arrangements and is off permanently.
 
LAUNCHES.
None expected.

Source: Weather Satellite Report 2010, Douglas Deans, dsdeans@btinternet_dot_com
weather-satellite-reports@yahoogroups.com