[aprssig] Symbol for packet digipeater

[John Langtry, VE3NEC]

Hi All,

Or, Bob, like we did years ago (during the frequency wars) put the Lat &
Long of the repeater into
the node's Btext as an APRS string along with the local APRS frequency.

Hopefully the frequency is not needed anymore.   :)

vy 73 de John VE3NEC