Franklin County Interoperability
For what its worth, the system does work however as others have mentioned, it is very range limited.
I recently moved from the north central part of Wake County over to almost the Franklin County line near NC96/NC98 and even now, there are times that it does not always work well despite being only a mile or less from the Franklin/Wake line. I have access to both a Unity and an APX and both work about the same with a slight edge going to the APX for audio clarity and signal quality. Franklin County 911 staff have worked very hard with the Wake County VFD's that provide mutual aid responses with Franklin County (Wake Forest, Rolesville, Hopkins and Zebulon) to improve interoperability. These fire departments have implemented additional talk groups in their respective radios that are on the VIPER system, not the Wake system, and that the same talk groups also exist at Franklin County 911 and can be patched across to the Harris VHF P25 system. Indeed the Harris system is FDMA and NOT TDMA but as to future plans, I cannot advise.
M