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The Technisonic TFM-403 is a frequency agile airborne UHF/FM High Band transceiver operates from 403.000 MHz to 512.000 MHz in 2.5 kHz steps, providing for either 12.5 kHz (Narrow Band) or 25.0 kHz (Wide Band) channel spacing.

The TFM-403 offers a two channel synthesized Guard Receiver (no crystals), 120 channels of preset memory, scan and priority scan all available CTCSS tones, all DPL/DCS codes, PC uploading and downloading and can operate without restriction on any split frequency pair available within the band. Function control is via a panel mounted 12-button keypad. Operating frequency, alpha-numeric identifier and other related data are presented on a 48-character, two-line LED matrix display. This transceiver weighs just 3.1 lbs., is Dzus panel mounted and is completely self contained (no heavy remote transceiver), eliminating problematic, complicated, heavy and costly R/T to control head interconnect wiring. The TFM-403 is used extensively in Police, Medivac and Electronic News Gathering applications.