Being from a software/computer background my interest in radio originally stemmed from packet and system linking.
There are a number of systems that I manager the IT/Software side of including a P25 system and an APRS iGate/Digipeater that is in the works.

Below you will find a list of systems of which I manage the software/linking.

443.700 + 293 NAC,  Located in Thompson, Ohio, P-Star P25 Network :: TG 50100 Local Wide Area, TG 10100 Worldwide, TG 10200 North America, TG 10201 NA TAC,  TG 10 Parrot

Hardware and RF engineering by http://n1tvi.net/n1tvi-repeaters/