RADIO DESIGN LABS

electronic circuitry and mounts for audio and video systems, namely, racking systems for modular electronic components comprising metal panels; mounting kits comprising metal brackets, adhesive foam and/or detachable interlocking strips; terminal blocks; power supplies; audio coupling transformers; preamplifiers; noise monitors; audio line level and microphone level mixers; ramp generators; paging modules; equalizers; audio compressor/limiters; signal switching relays; audio switches; audio and video signal filters; telephone system couplers; and controllable audio mixing and routing matrices