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The Technisonic TAF-550 VHF AM/FM Modular Communications System is a transportable AM and FM base station capable of operating simultaneously on any 25 KHz VHF/AM aeronautical band frequency (117.975 to 138.000 MHz) as well as any VHF/FM high band (138.000 MHz to 174.000 MHz) frequency.

Power for the TAF-550 can be external 120 VAC, external 12 VDC or 24 VDC. Both transceiver modules utilize state of the art, microprocessor controlled frequency synthesis techniques to provide communications on every currently available channel. The TAF-550 AM/FM Modular system is mounted into a rugged transportable case with protective covers (front and rear) into which the accessories (microphone, power cables, antenna cable, etc.) can be stored. It is intended for temporary, emergency or backup operation in a fixed environment. The TAF-500 was designed specifically for the US Forest Service for use as a tactical field fire base command and control station.