Microphone Base/Desk, High Quality Amplified Ceramic Type
Connector 4-Pin Cobra/Uniden/Galaxy
The Astatic AST878DM is an Omni Directional Ceramic Desk Microphone offering a rugged cycolac housing for industrial and commercial applications.
The Microphone switching is accomplished with a simple PTT button with locking capabilities.
The volume can be adjusted with a potentiometer located under the microphone base.
The AST878DM is manufacturered to take normal abuse while retaining its performance, just like you would expect from the Astatic brand.
Fire, Police and Taxi Dispatching, Paging in Department Stores, Bowling Alleys, Factories, Schools, Fast Food Restaurants, CB Desk Microphone
– Standard PTT Push-to-talk and Lock-To-Talk buttons
– High quality omnidirectional ceramic cartridge
– Five conductor shielded, standard astatic color coded cable with 4-Pin Connector (standard Cobra/Galaxy/Uniden wiring).
– Requires 9 Volt Battery (not included)
WIRING OF MIC CABLE:
Pin 1 = Shield Blue; Ground Common
Pin 2 = White; Audio
Pin 3 = Red; PTT TX
Pin 4 = Black; RX