Polar APT/LRPT Report
POLAR APT/LRPT REPORT – 5th October 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