The Astatic Model 636L-C Chrome Edition is a professional-grade noise-canceling dynamic microphone engineered specifically for close-talking, handheld applications. Widely recognized as the industry standard for commercial truck drivers, amateur radio operators, and CB enthusiasts, this high-performance microphone is designed to thrive in extremely noisy environments. Whether you are operating on CB, SSB, or Amateur Radio bands, the 636L-C ensures your voice cuts through heavy engine rumble, road vibrations, and cabin noise with absolute precision.
Housed in a classic, ergonomic teardrop-style casing with a striking chrome-style finish, this heavy-duty microphone features the same rugged, highly dependable dynamic element utilized in professional-grade commercial two-way radios. The microphone’s frequency response is meticulously tailored to maximize voice intelligibility and clarity while providing 360-degree minimization of ambient background noise. To guarantee optimal performance, a soft, built-in lip guard is positioned on the front grille, helping operators maintain the perfect close-talking distance. The shell is molded from high-impact Cycolac, a rugged polymer capable of surviving daily drops and the toughest treatment on the road.
For maximum system compatibility, the Model 636L-C comes equipped with a highly flexible six-wire, five-conductor (one conductor shielded) coiled cord. This specialized cable architecture extends up to 2.3 meters (7.5 feet) and features a heavy-duty molded strain relief bushing to prevent wire breakage at the microphone housing. The 6-wire configuration allows for electronic, relay, or virtually any custom wiring hookup to interface with almost any transmitter or transceiver on the market. Engineered with a low-impedance output (200 ohms) and a long-life, trouble-free Double-Pole Double-Throw (DPDT) switch (factory-wired normally open), this microphone is built to deliver decades of reliable service.
Key Features
- Professional Dynamic Element: Equipped with a rugged, high-reliability dynamic cartridge identical to those used in commercial two-way radio systems.
- Active Noise Cancellation: Engineered for close-talk applications, featuring a 360° background noise suppression system to deliver clean voice audio.
- Classic Teardrop Chrome Housing: Iconic styling molded in high-impact Cycolac polymer with an eye-catching chrome finish to withstand rugged handling.
- Integrated Lip Guard: Features a soft, built-in lip guide to assist operators in maintaining the perfect close-talking distance for peak modulation.
- Highly Flexible 6-Wire Cable: Heavy-duty coiled cord extends to 2.3 m (7.5 ft) and supports custom wiring for relay, electronic, or multi-brand transceiver integration.
- Industrial DPDT Switch: Outfitted with a premium, long-life Double-Pole Double-Throw switch, factory-wired normally open for trouble-free PTT operation.
- Robust Strain Relief: Extra-durable molded rubber bushing shields the cable-to-housing joint against tension, twists, and wire fatigue.
Technical Specifications
| Parameter | Specification |
|---|---|
| Brand | Astatic |
| Model Designation | 636L-C (Chrome Edition) |
| Product Type | Handheld Dynamic CB/Amateur Microphone |
| Microphone Type | Dynamic Noise-Canceling |
| Frequency Response | Voice-tailored communication spectrum with 360° ambient rejection |
| Nominal Impedance | 200 Ohms (matches system loads from 50 to 1000 Ohms) |
| Output Levels | -58 dB (0dB = 1 mw/10 microbars) -76 dB (0dB = 1 volt/microbar) -152 dB EIA |
| PTT Switch Type | DPDT (Double-Pole Double-Throw), factory-wired normally open |
| Cable Architecture | 6-wire, 5-conductor (1 shielded conductor) coiled cord with heavy strain relief |
| Max Cable Extension | 2.3 meters (7.5 feet) |
| Chassis Material | High-impact molded Cycolac polymer with chrome finish |
| Connector Connection | Available stripped and tinned, or configured with a 4-pin (DX1) DIN |
| Net Weight | 284 g (10 oz.) |
Package Content
- 1x Astatic 636L-C Chrome Noise-Canceling Microphone with integrated coiled cable
- 1x Soft Protective Lip Guard (attached)
- 1x User Reference & Pinout Wiring Manual
