# GNURadio ISM band transmitter data decode

**URL:** <https://www.ruby-forum.com/t/gnuradio-ism-band-transmitter-data-decode/240261>\
**Category:** GNU Radio\
**Created:** [April 4, 2014, 7:03pm UTC](https://www.ruby-forum.com/t/gnuradio-ism-band-transmitter-data-decode/240261 "2014-04-04T19:03:22Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Detlef\_R](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/58f4c7/32.png) [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\
**Post date:** [April 4, 2014, 7:03pm UTC](https://www.ruby-forum.com/t/gnuradio-ism-band-transmitter-data-decode/240261/1 "2014-04-04T19:03:22Z")

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Hello,  
I am looking for person who has experience of signal processing using  
gnuradio.  
We have a radio transmitter that transmits data in format:  
\<PREAMBLE [4 byte]\>\<SYNC [2 byte]\>\<DATA [9 byte]\>\<CRC [2 byte]\>.  
With the following parameters of a signal:

- Frequency - 868.0 - 868.9Mhz
- Modulation type: 2FSK or 2GFSK
- Buadrate: 1Kbps

Rado data is received on a computer using a USB FUNcube Dongle Pro+.  
Need to write a console program in C, C++ or Python programming language  
using GnuRadio.  
Program should listen to the airwaves in search of a signal. If the data  
is found (\<DATA [9 byte]\>) display them to the console.  
Also, the program should check CRC.

We can provide a raw radio data stream (file) with record of a signal.  
Or remote access to our PC with a connected USB FUNcube Dongle Pro+  
(transmitter will be located in close proximity).

[https://www.elance.com/job/55017107/proposals](https://www.elance.com/job/55017107/proposals)

Consider any proposals. Thanks.