[aprssig] More efficient use of channel capicity throughshorterpackets

[scott at opentrac.org]

> APRSworld says the average comment text length is 29.5 
> characters, if you're
> wondering.

Just finished a query on raw packets, and the average information length
(minus address and path) is 54 characters, based on a sample of 23 million
packets.

Scott
N1VG