RADIO DESIGN LABS

ELECTRONIC CIRCUITRY AND MOUNTS FOR AUDIO AND VIDEO SYSTEMS, namely, RACKING SYSTEMS COMPRISING METAL PANELS AND CHASSIS ASSEMBLIES WITH ACCOMPANYING HARDWARE; MOUNTING KITS COMPRISING METAL BRACKETS, ADHESIVE FOAM AND/OR DETACHABLE INTERLOCKING STRIPS; TERMINAL BLOCKS; POWER SUPPLIES; AUDIO COUPLING TRANSFORMERS; AUDIO, VIDEO AND DATA INPUT INTERFACES; 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 ]