Boosts higher frequencies to help audio "cut through" during DX contacts. Boosts higher frequencies to help audio "cut through"

: Includes standard PTT (Push-To-Talk), a PTT Lock switch, and scanning controls (Up/Down/Fast) for compatible transceivers. Connector Pinout a PTT Lock switch

The microphone uses an 8-pin circular connector or a modular RJ-type connector depending on the version. Standard wiring for the 8-pin connector is as follows: Wire Color 2 3 4 5 6 7 Mic Ground 8 Sources: Technical Documentation