I was finally able to test the gateway yesterday and all seems functional. It's located in the small town of North Wilkesboro, NC, USA (Yadkin River Valley)
Antenna: Diamond X-200A at 30ft AGL
RMS Packet running on a Lenovo ThinkCentre M73 mini PC (purchased on ebay for $66)
Masters Communications DRA-50M audio interface
Yaesu FTM-200D, 145.030 Mhz