Plantronics, Inc. - Design, manufacture and market lightweight communications headset products. Offers a facility to buy online . Includes product features, technical articles and a where to buy section . David Clark Company Incorporated - Manufacture noise attenuating headsets and adapters for use with two-way radios. Products selectable by radio manufacturer. Porta Phone - Manufacturer of football communication headsets and radios. J&M Corporation - Manufacture helmet headsets and hook-up cables for motor cyclists. Product descriptions and photographs, pricing and facilities to purchase online. RadioMate Corporation - Manufacture radio communication and telephone headsets and audio accessories . Includes product overviews and pricing . Telex Communications, Inc. - Market, design and manufacture audio, wireless and multimedia communications products. Products include speakers, amplifiers, mixers, consoles, signal processors and microphones . Western Mobile Telephone Company - Manufacture a hands-free undercover microphone system used with law enforcement two-way radios. PCL Communications - Maker of the coiled behind-the-ear listening earpieces. Designed for surveillance, tactical, police and security applications. McKay Products USA - Supplier of two-way radio earphones, headsets, microphones, PTT, and bone conduction sets. Setcom Corporation - Designs, manufactures and sells a range of communications products including headsets for police, fire and military usage. [Requires Flash and Javascript] Klein Electronics Inc. - Provides headsets and other accessories for two-way radio equipment. CeoTronics AG - Manufacture a range of headsets with integrated UHF 2-way-radio for a range of applications. Includes a downloadable brochure in pdf format .