[aprssig] Use of | in aprs packets

[Bob Bruninga]

> 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
Bob, WB4APR