Santa Ana, California. FM SYSTEMS, INC. has developed a new noise reduction system that can reduce noise in program audio sources such as telephone call-in, old recordings, or video and audio tape by as much as 25 dB.
FM SYSTEMS, INC. Santa Ana CA. has developed an intercom and signaling product that uses the existing coax in any CCTV installation for two-way audio communication. For access control it also provides a contact closure in each direction for alarms or to open doors.
Very high quality video pictures can be sent over Unshielded Twisted Pair (UTP) wires, provided that suitable cable slope equalizers and amplifiers are provided to completely off-set the losses incurred when the video signal traverses the UTP cable pairs.