[aprssig] APRS freq spec questions

[Bill Vodall]

> commands with K4JH on his THD72a, it appears that I guessed correctly.
> T100 will configure your radio to only encode a PL of 100Hz, where
> C100 configures your radio to both encode and decode 100Hz.

One of the issues with Freq posts is that Kenwood and Yeasu have
slightly different implementations.  Check the discussion list history
for work folks have done nailing down the differences...

Bill