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.

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

13 comments

  1. 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.

  2. 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

  3. 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

  4. 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?

  5. 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..

    • 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 !!

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