Vertex Standard AAE46X007 MH-66A4B IP57 submersible speaker microphone VX-450, EVX-530 series Review February 18, 2018 Drummingbird No Comments CB & Two-Way Radios Vertex Standard AAE46X007 MH-66A4B IP57 submersible speaker microphone VX-450, EVX-530 series Post navigation ← 4:1 Current Balun Dual core 1500 watts RTTY, 3KW ICAS ReviewDiamond Original NR770HB 144/440 MHz Dual-Band Mobile Antenna, Black, Gain: 3.0 / 5.5 dBi, Connector: PL-259, Fold Over, Length: 38.5″ Review →