GPS Antenna Cobra Marine VHF Radio MR F45 D F55 F77 F57 Fused Receiver + Mount
VHF Radios: MR-F45, MR-F55, MR-F77, MR-F45D. NOT For MR F57W E and MR F57B E. This is what you have to do to get a position showing on your radio screen. all wired up ready to plug in and power up.