CAD 611L Omnidirectional Dynamic Palmheld Microphone w/ Talk Switch

The CAD 611L (formerly Astatic 611L) is an omnidirectional dynamic palmheld microphone engineered for near-proximity talking and paging in demanding environments. With its push-to-talk DPDT switch, voice-tailored frequency response, and rugged Cycolac® housing, the 611L delivers crisp, highly intelligible speech for dispatch, mobile radio, industrial paging, security, and general public address systems.

Key Features

• Omnidirectional Dynamic Capsule: Moving-coil dynamic element with an omni pickup pattern provides a generous, forgiving pickup zone for users who may not stay perfectly on-axis.
• Voice-Tailored Frequency Response: Response shaped for speech (approx. 200 Hz – 6.5 kHz) to enhance clarity and intelligibility in paging and communication systems.
• DPDT Push-to-Talk Switch: Long-life DPDT (double-pole, double-throw) talk switch mutes the mic and provides external contact closure for keying transmitters, paging amplifiers, or control circuits.
• Heavy-Duty Coiled Cord: Permanently attached 6' four-conductor, two-shielded coiled cable with stripped and tinned ends for easy wiring to radios, amplifiers, or junction blocks.
• Low-Impedance Output: 360-ohm low impedance output supports long cable runs while minimizing hum and interference.
• Rugged Polyester Diaphragm: Dynamic cartridge uses a polyester diaphragm resistant to moisture, temperature extremes, and many chemicals, ideal for harsh environments.
• High-Impact Cycolac® Housing: Molded teardrop-style shell provides a comfortable grip and long-term durability in industrial and mobile applications.
• Hang-Up Clip Included: Comes with a matching hang-up clip for convenient storage on dashboards, consoles, and equipment racks.

Ideal Applications

• Two-way radio and dispatch communication
• Industrial and plant paging systems
• Security, emergency, and bus call stations
• Mobile communications in trucks, buses, and service vehicles
• Public address systems in warehouses, factories, and terminals
• General commercial paging and intercom installations

Technical Specifications

• Operating Principle: Moving coil dynamic
• Polar Pattern: Omnidirectional
• Frequency Response: 200 Hz – 6.5 kHz (voice-optimized)
• Sensitivity: Approx. -56 to -58 dBV (≈ 1.6 mV) @ 1 Pa (typical)
• Impedance: 360 ohms, low impedance
• Switch Type: DPDT, momentary push-to-talk, factory wired normally open
• Cable: Approx. 6' heavy-duty coiled, 4-conductor, 2-shielded, stripped and tinned ends
• Housing Material: High-impact Cycolac® molded shell
• Color: Black
• Connector: Unterminated pigtail (field-wired)

What’s Included

• CAD 611L omnidirectional dynamic palmheld microphone
• Permanently attached coiled cord
• Hang-up clip

Why Choose the CAD 611L?

If you need a dependable palmheld microphone that delivers clear speech in demanding paging and communication setups, the CAD 611L is a proven workhorse. Its omnidirectional dynamic element, push-to-talk DPDT switch, rugged construction, and installer-friendly coiled cord make it ideal for dispatchers, drivers, and operators who rely on intelligible communication every day. From factories and warehouses to fleet vehicles and security posts, the 611L is built for years of reliable service.