This is a Post Office Code Standardization Advisory Group (POCSAG) protocol decoder that currently runs on Linux and FreeBSD.

It features:

• Soundcard input via OSS (usually /dev/dsp).
  
• Server mode: One instance of the decoder can serve audio and raw POCSAG streams to other instances of the decoder connecting as clients.
  
• Telnet server.
  
• Logging of raw POCSAG codewords to disk.
  
• Error highlighting.
  
• Noise smoothing (reduces error rate when input signal is weak and/or noisy).
  
• Statistics logging.
  
• Displaying of raw POCSAG codewords.
  
• Filtering based on keywords, RIC, and function bits.
  

It has the ability to log decoded messages to:

• Console
  
• Disk
  
• MySQL
  
• IRC
  
• Windows machines (popup using the messenger service).
  
• Telnet server
  
• E-mail
  
• External applications
  

This project originally began as a Perl script in January of 2008 when I realized that there were no working POCSAG decoders for Linux, and I badly wanted one.

It has since been rewritten and improved to this C version. Please read the documentation carefully before attempting to use it.

Download

pocsag-1.03d.tar.gz (107 kB) Changelog

This program is licensed under the GNU General Public License (GPL).

Send all feedback to upocsag@s-lab.se

• Statistics

• Telnet server

• Error highlighting and displaying of raw POCSAG codewords

Last updated: April 27, 2018.