[aprssig] Use of | in aprs packets

Bob Bruninga bruninga at usna.edu
Mon Feb 16 08:43:04 CST 2009

> In the APRS 101 spec it's stated the 
> use of | isn't permitted in a number 
> of packets,... because it is used as 
> the TNC stream character.  [but]
> Mic-E/Base-91 packets contain  it...

Because Mic-E packets do not go into a TNC in terminal mode on the serial port whereas a | character generated in a client program may.  And it would screw up the TNC.

Hope that helps

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