The Astatic 636L-SE (SILVER) CB microphone – The Astatic Model 636L-SE is a noise canceling dynamic microphone for close talking, hand held applications in CB, Amateur Radio, and SSB communications The 636L-SE has a rugged, dependable dynamic element (the same element used in professional two-way radio) in a classic tear-drop style housing. is a commercial-grade, heavy-duty voice transmission terminal precision-engineered to deliver secure vocal synchronization, exceptional speech clarity, and advanced background suppression across demanding mobile environments. Built with an elite architectural layout to overhaul stock, fragile radio microphones that fail under high cabin rumble or physical stress, this premium communications accessory serves as an essential operational procurement asset for long-haul transport logistics fleets, industrial maritime vessel cockpits, emergency backup command vehicles, and high-volume B2B radiocommunication hardware distribution networks looking to source original factory-genuine audio gear assets.
The core acoustic engineering of this device centers around a high-integrity type: dynamic noise canceling capsule configuration. The specialized frequency response curves are precisely tailored for maximum intelligibility and clarity in voice communications, generating a uniform 360º minimization of background noise to actively isolate your voice from heavy diesel engine rattle, road hum, or passing wind lines. To ensure operators preserve the ideal close-talking spacing needed to drive the noise-canceling circuit efficiently, a integrated soft lip guard is positioned to assure proper close talk spacing by the operator, preventing breath pops or audio clipping during emergency tracking maneuvers.
Constructed to thrive across severe, multi-season industrial deployment cycles, the teardrop housing block is molded in a durable, high-impact black Cycolac resin matrix accented by a striking premium silver face layout. Audio routing and switching logic are driven by a long-life, trouble-free DPDT switch, factory wired normally open, guaranteeing crisp click-stops over thousands of transmissions. To survive the severe physical tugging common inside large fleet cabs, the base line is outfitted with an indestructible Super-Flex stainless steel cord armor sleeve enclosing a high-conductivity six wire, five conductor (one conductor shielded) cable matrix, allowing for seamless custom modification to match electronic or relay-switched transmitters.
Technical Specifications
| Technical Parameter | Specification |
|---|---|
| Product Brand Designation | Astatic (Original Factory Genuine Heavy-Duty Audio Line) |
| Hardware Model Designation | 636L-SE / 636LSE Silver Special Edition Series |
| Primary Component Classification | Handheld Noise-Canceling Communications Microphone |
| Transducer Element Mechanism | Rugged Dynamic Moving-Coil Structural Core (Professional Two-Way Grade) |
| Acoustic Shield Optimization | 360-Degree Radial Ambient Noise Cancellation for Close-Talk Applications |
| Calibrated Audio Output Levels | • -58 dB (0dB = 1 mw / 10 microbars) • -76 dB (0dB = 1 volt / microbar) • -152 dB EIA Sensitivity Reference Scale |
| System Characteristic Impedance | 200 Ohms Nominal (Matches standard input circuits from 50 to 1000 Ohms) |
| Mechanical Control Layout | Double-Pole Double-Throw (DPDT) Long-Life PTT Switch (Factory Wired Normally Open) |
| Transmission Line Construction | 6-Wire Coil Cord containing 5 insulated conductors plus 1 dedicated braided shield wire |
| External Cable Protection Shield | Indestructible Interlocking Stainless Steel Super-Flex Coiled Spring Jacket |
| Chassis Housing Material | Durable High-Impact Molded Black Cycolac Resin with Classic Tear-Drop Profile |
| Primary Base Interface Wiring | Stripped and Tinned Open Leads (Ready for custom multi-pin connector termination) |
| Net Operational Hardware Mass | 284 grams (10 oz.) Balanced Low-Torque Structural Mechanical Weight |
| Verified Hardware Compatibility Scope | Commercial CB radios, amateur HF transceivers, SSB mobile units, multi-pin DIN layout adapters, fleet maintenance stations, and workbench test line sets |
| Primary Fleet Utility Purpose | Turnkey transport fleet upgrades, high-noise voice signal tracking stabilization, custom audio interface wiring, and microphone circuit switch protection |
