A C-program for encoding POCSAG-packages
is defined as "non-speech, one-way, personal selective calling
system with alert, without message or with defined message such as numeric
or alphanumeric" in CCIR's recommendation defined below.
POCSAG is a protocol for transmitting data to pagers. It is also called
Radio Paging Protocol No. 1. The protocol is used for example in the swedish pagernet MiniCall.
I have made a C-program that calculates what to send in batches. The program
has been tested in a practical application. By feeding the result into
a 68HC11-based computer and then modulating a transmitter on 168.9 MHz.
Magnus made this system and now - when the phone calls - triggers an
old pager for the swedish MiniCall system.
Here is the sourcecode zipped (11443 bytes).
if liked it or something :-) .
- ...Magnus Ísterberg for idea, pushing and testing.
- ...FFV Aerotech AB, Stockholm for having a superb library with all
information (Don't tell them because they don't know it :-) ). That
office has also closed down so they shouldn't bother.
Sources of information on POCSAG and pagers:
- "Recommendations of the CCIR, 1990 Volume VIII". Rec. 539-2 describes
the requirements of the transmitter as frequency deviation. Also
called "Technical and Operational Characteristics of Future International
- "Recommendations of the CCIR, 1990 Volume VIII". Rec. 584-1 describes
the protocol. Also called "Standard Codes and Formats for International
- "Recommendations of the CCIR, 1990 Volume VIII". Rep. 900-2 contains
additional information concerning Radio-Paging Code No. 1.
have made an "application book" called "Pager Applications
- Deep explanations of the
- A good
to find out more about paging.
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[Copyright © 1996, 1997, 1998 Stefan Petersen,