# Ahrpt

**URL:** <https://www.ruby-forum.com/t/ahrpt/243183>\
**Category:** GNU Radio\
**Created:** [August 30, 2015, 3:22pm UTC](https://www.ruby-forum.com/t/ahrpt/243183 "2015-08-30T15:22:06Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Rafa\_F](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/958977/32.png) [@Rafa\_F](https://www.ruby-forum.com/u/Rafa_F)\
**Post date:** [August 30, 2015, 3:22pm UTC](https://www.ruby-forum.com/t/ahrpt/243183/1 "2015-08-30T15:22:06Z")

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Hello,

I have managed to get the gr-noaa modules working quite nicely on  
HRPT signals  
from the NOAA satellites. I have also attempted to detect strong  
signals from  
METOP-B and METEOR-M2. In the case of METEOR-M2, the signal looked  
very  
much like the BPSK signal from the NOAA satellites, whereas with the  
METOP, the  
FFT looked qualitatively different.

```
Based on what I have found on the web, it does not seem like the 

```

METOP is  
“open source.” But I am wondering about the METEOR-M2. Does anyone  
have (or know of) any experience decoding this AHRPT signal? My hope  
is  
that it can be done with a relatively small tweak of the existing  
gr-noaa module(s).

Sincerely,  
Dan Marlow

P.S. I attach a false color HRPT image received from NOAA 19 yesterday  
using usrp\_rx\_hrpt.py