The Astatic AST-878DM CB desk microphone is a commercial-grade, base-station voice communication accessory engineered to deliver stable modulation and reliable performance across industrial dispatch environments, commercial radio rooms, and base-station fleet deployments. Utilizing a high-integrity omnidirectional ceramic cartridge element, this desk microphone ensures uniform acoustic capture and clean signal delivery, resisting the environmental and temperature fluctuations that often degrade other transmitter types. It serves as an essential logistics procurement component for central logistics hubs, security base operations, maritime dispatch points, and high-volume B2B radiocommunication equipment wholesale networks looking to secure durable desk station infrastructure.
The structural architecture of the Astatic AST-878DM features a rugged, impact-resistant Cycolac housing designed to withstand standard operational abuse while maintaining absolute electronic performance. The mechanical switching configuration incorporates an ergonomic Push-to-Talk (PTT) button paired with a dedicated Lock-to-Talk slide mechanism for hands-free continuous transmission. For precise audio path balancing, the base integrates an under-chassis potentiometer control, allowing operators to adjust the microphone’s output volume level to match different transceiver modulation thresholds. Powered by a standard 9 Volt battery, the unit comes outfitted with a heavy-duty, five-conductor shielded cable pre-terminated in a standard 4-pin female connector format, wired out-of-the-box for seamless deployment with Cobra, Galaxy, and Uniden mobile or base transceivers.
| Technical Specification Parameter | Specifications |
|---|---|
| Product Brand Designation | Astatic (Commercial Base Station Audio Line) |
| Hardware Model Designation | AST-878DM (AST Ceramic Desk Series) |
| Primary Component Classification | Amplified Ceramic Base Station Desk Microphone |
| Microphone Cartridge Element Typology | High-Quality Omnidirectional Ceramic Matrix |
| Mechanical Switch Configurations | Standard PTT (Push-to-Talk) and Lock-to-Talk Dual Array |
| Audio Gain Regulation Control | Under-Base Adjustable Volume Level Potentiometer |
| Cable Infrastructure Type | 5-Conductor Shielded, Flexible Coiled Line with Astatic Color-Coding |
| Primary RF Interface Connection | 4-Pin Female Screw-On Connector (Standard Cobra/Galaxy/Uniden Platform) |
| Factory Cable Pin-Out Configuration | Pin 1: Shield Blue (Ground Common) | Pin 2: White (Audio) | Pin 3: Red (PTT TX) | Pin 4: Black (RX) |
| System Power Supply Requirements | Requires 1x 9V Block Battery (Internal Compartment – Not Included) |
| Primary Casing Construction Material | High-Durability Heavy-Gauge Cycolac Industrial Thermoplastic Enclosure |
| Primary Fleet Utility Purpose | Turnkey base station audio outfitting, commercial dispatch office deployment, voice modulation calibration, and replacement desk mic stock provisioning |
