Microphones and Headphones
CeoTronics AG, Comtronics Inc., David Clark Company Incorporated, Dowumi Corporation, DTC Communications Inc., J&M Corporation, Kaotek Electronic Co., Ltd., Klein Electronics Inc., Legion RF, McKay Products USA
ChargeGuard, Incorporated
Manufacture an automatic on/off swith for two way radios. Includes a listing of dealers and representatives .
NorComm Corporation
Design and manufacturer of encoders, decoders, scramblers, encryption devices for data and voice signaling for two-way radios and wireless communications systems.
RST Engineering
Manufacture electronic kits for communication and aviation including audio selector panels, marker receivers, headsets, intercoms, and antennas. Product catalog, photographs, magazine articles and bookstore .