July 19, 2019

Weather Satellite Meteor M2-2 Now Transmitting Images

Reports from Reddit and Twitter are in that the recently launched Meteor M2-2 weather satellite is now functional and broadcasting images at 137.9 MHz. A few people have noted that the reception quality appears to be better than the older satellite.

My first LRPT reception at 137.9 MHz from the new Meteor M2-2 satellite, 14:16 UT pass today: pic.twitter.com/6OaOMOvoYh
— Dr Marco Langbroek (@Marco_Langbroek) July 18, 2019

Thank you to Happysat whose also provided the following information that can be used to receive the images. It appears that a slightly modified version of LRPTDecoder is required:

This version of LRPTDecoder was used to test/debug OQPSK with Meteor M-N2-1 in 2014, it will work on Meteor M-N2-2.
The ini file attached in the archive is processed manually from s files.
Buttons 72K and 80K respectively for the modes “without interleaving” and “with interleaving”.
Also in the archive there are examples for other modes.

Transmissions on LRPT with a OQPSK Modulation are expected tomorrow on most probably 137.900MHz.

Make sure you have version 1.9 of the Meteor QPSK Plugin running in SDRSharp.
http://rtl-sdr.ru/uploads/download/meteor.zip

Changelog:
Optimized QPSK demodulator, OQPSK signal for receiving current and future Meteor.

For people running Tracking DDE Client Plugin make sure you have the following entries in the scheduler:

METEOR-M2_2

radio_Start
radio_modulation_type<wfm>
radio_center_frequency_Hz<138380050>
radio_frequency_Hz<137900000>
radio_bandwidth_Hz<90000>
OQPSK_demodulator_Start
send_tracking_frequency_On

Edit to your path! for MeteorGIS Custom ini file start_programm_Path<C:\Meteor\MeteorGIS\MeteorGIS.exe>

Edit to your path! for MeteorGIS Custom ini file start_programm_Path<C:\Meteor\MeteorGIS\MeteorGIS_M_N2-2.bat>

Edit to your path! Without MeteorGIS start_programm_Path<C:\AMIGOS\run.bat>

send_Tracking_Frequency_Off
OQPSK_demodulator_Stop
radio_Stop

Download:

https://cloud.mail.ru/public/2Se9/9bj36m6AP

Mirror:

http://happysat.nl/2015.3.20.15.zip

Спасибо Олегу, Нцомз и Роскосмосу!

Happysat

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13 comments

September 14, 2019 - 9:34 am Oleg

I have recorded N2-2 transmission as WAV, is there a way to offline decode it without sdr# plugins? I used LrptRx.exe to generate raw files for LRPT decoder.

Reply
- September 14, 2019 - 10:05 am Oleg
  
  Ok, just found out I could playback WAV recording in sdr#, so I used the meteor demodulator plugin. Thanks
  
  Reply
August 11, 2019 - 5:29 pm K5MPH

I hear that the Meteor Sats have better weather photos than NOAA Sats is this true……

Reply
August 3, 2019 - 6:07 am Viktor Drobot

Does anybody know if I could decode LRPT images from new Meteor with the help of glrpt? Seems like it’s already know about Meteor-M2-2 satellite according to the labels inside program… Also I’ve noticed that starting from today I don’t able to receive any signal from Meteor-M2: neither on 137.9 nor 137.1 MHz

Reply
July 24, 2019 - 12:38 pm Happysat

Inside s_file,.bat is just a move command to move the s-files from e.g. M-N2-2 to another folder:
move D:\SDR\Meteor\S_file\* D:\SDR\Meteor\S_file\M22

AMIGOS was used as a folder name on the older versions of LRPT-Decoder, you can change to whatever you want to.

The scheduler config other sat’s are just like NOAA and Meteor similar commands to start and keep track of the freq.

ISS

radio_Start
radio_modulation_type<nfm>
radio_center_frequency_Hz<145800000>
radio_frequency_Hz<145800000>
radio_bandwidth_Hz<9570>
radio_tracking_frequency_On
baseband_recorder_Start

radio_tracking_frequency_Off
baseband_recorder_Stop
radio_Stop

Reply
- July 24, 2019 - 3:14 pm LedgerWarrior
  
  thanks !!
  
  Reply
- August 14, 2019 - 10:58 pm JimC
  
  Would love to know what other routines you have set up like the ISS example you posted! (I’ve gotten stuff configured for NOAA 18/19, Meteor M2 & M2-2).
  
  Reply
July 22, 2019 - 7:08 pm Jonis

BTW: right now, 22/07/19 19h09 UTC, M2 is passing here (Brazil) and transmiting at 137.100Mhz, not 137.900.

Reply
July 22, 2019 - 3:27 pm Jonis

Unfortunately, realtime decoding doesn’t work with new sat, even with sat=2.1 in .ini file 🙁
offline lrpt decoder works fine. Is this right or am I making something wrong?

Reply
July 19, 2019 - 6:11 pm Happysat

I did make a new howto, many things did change since 2014 :p : http://happysat.nl/Setup_Meteor/Setup.html

Reply
July 19, 2019 - 2:47 pm Happysat

Like this:
https://imgur.com/a/rPXtMYD

Reply
July 19, 2019 - 2:38 pm Happysat

Thanks for posting Admin 🙂

One small side note, this newer version of LRTP-Decoder distinguish both Meteor’s with a new entry in the ini config file: sat=M2.1.

For people using MeteorGIS, it does auto generate a ini file without this needed entry.
Author of MeteorGIS will update his program soon.

So for now Meteor M-N2-2 better use the “old way” in DDE-Tracker scheduler:
start_programm_Path and point the batch file to LRPTDecoder.exe

MeteorGIS can manually started in offline mode but it will only process Treated-UTM images and exit with error after that..

Reply
- July 23, 2019 - 6:24 pm LedgerWarrior
  
  Thanks for this amazing HowTO ! It helps really to understand the process.
  I have just two questions 🙂
  
  Can you share somewhere or explain what is inside the file “s_file.bat” used for LOS entry config, as on the how to you start first to configure with LRPT decoder than jump directly on Amigos.
  
  And can you upload a complete config for all sat for DDE scheduler ( i saw you have more SAT and i would like to test , for sure some must be useless, just for my understanding ).
  
  Thanks for this !!
  
  Reply

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