This video demonstrates how to get the FT991A setup for C4FM communications by configuring the Call Sign and GPS Coordinates. When talking on C4FM the network tags your call sign and GPS and sends this information along with your transmission.

The below link is to locate your GPS settings
https://www.latlong.net/

C4FM / FM Repeater Operation W5FA Overview Repeater Link:
https://repeaterbook.com/repeaters/de...

C4FM / FM Repeater Operation K5RWK Overview Repeater Link:
https://www.repeaterbook.com/repeater...

Where to find C4FM Radio to Radio Repeaters
https://www.repeaterbook.com/repeater...

Where to find C4FM Repeaters Linked to Texas Nexus
https://www.repeaterbook.com/repeater...

Where to find All C4FM Repeaters
https://www.repeaterbook.com/repeater...

The below link will provide Wires-X DTMF Room ID’s
https://www.yaesu.com/jp/wires-x/id/i...