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By: Shure
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Microphones, Headphones & Wireless systems
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Voice Communication Microphones
The Shure Specialty to General Communications Microphone Series 527-B is an extremely reliable handheld dynamic microphone with an extended low- and high-frequency response particularly suited to ham radio use, mobile FM transmission, and top-quality paging systems. The microphone has a clear, crisp, and natural voice response. It features small size, light weight, and modular construction.

The modular construction of the 527 B permits ease of field serviceability. The design of the cartridge, switch, and cable makes them easily replaceable. The microphone is wired to prevent lead breakage or crimping.

The unit fits naturally and comfortably in the hand and is not affected by heat or humidity. The exclusive ARMO-DUR case is immune to oil, grease, fumes, salt spray, sun, rust, and corrosion and is outstanding in its ability to withstand mechanical shocks and vibrations. The “Million-Cycle” leaf-type switch is designed to withstand severe operating conditions and constant usage.

The 527B is wired for balanced-line operation and is recommended for use where long cable lengths are required, or areas where strong noise fields may exist. The 527B microphone can be fed directly into a standard low-impedance amplifier, or a Shure A95 Series Line Matching Transformer can be used for coupling the 527B to the input of a high-impedance amplifier. A two-conductor shielded cable can be used for extending only the microphone circuit. If both the microphone circuit and the remote circuit are to be extended, a four-conductor cable, having two shielded conductors for the microphone, should be used.

The 527-B microphone is highly recommended for all types of mobile communications, ham radios, industrial and commercial paging systems, and outdoor public address systems. The 527B is a low-impedance microphone and is recommended where long cable lengths are required.

Extended low- and high-frequency response
Highly intelligible voice response
Unparalleled ruggedness and reliability
Moving coil (dynamic) element
ARMO-DUR case
“Million-Cycle” leaf-type switch controlling microphone and external relay or switching circuits
Modular construction for easy field service
“Lifetime” hang-up button and mounting bracket
Long-life neoprene-jacketed coil cord
Type Dynamic
Frequency Response 300 to 5,000 Hz
Sensitivity (at 1,000 Hz) Open Circuit Voltage* -53 dBV/Pa (2.2mV) *1 Pascal=94 dB SPL
Impedance Microphone impedance rating is 150 O (200 O actual) for connection to microphone inputs rated at 19 to 300 O
Switch Double-pole, single-throw, leaf-type
Cable Attached, 1.8 m (6 ft), 4-conductor (2 shielded), neoprene-jacketed
Net Weight 337 g (11.9 oz)
Packaged Weight 533 g (18.8 oz)
Certification Meets European Union EMC Emissions and Immunity Requirements (EN 50081-1: 1992, EN 50082-1: 1992)



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Prices and specifications subject to change without notice.