Technisonic Industries Limited TFM 550 Airborne transceiver Installation and Operating Instructions

Below you will find brief information for Airborne transceiver TFM 550. This transceiver is a frequency agile, fully synthesized airborne FM transceiver capable of operating in the 30 to 50 MHz, 138 to 174 MHz and 403 to 512 MHz frequency range in 2.5 kHz increments with either 25 kHz or 12.5 kHz channel spacing. The transceiver can operate without restriction on any split frequency pair in either band, which could be useful for various communication needs. The TFM 550 provides 200 operator accessible memory positions per band, each of which is capable of storing a transmit frequency, receive frequency, transmit frequency CTCSS tone or DPL code, receive frequency CTCSS tone or DPL code, an alphanumeric identifier for each channel and wideband (25 kHz) or narrowband (12.5 kHz) channel spacing assignment. This allows for customization of channel settings for specific frequencies, tones or codes. The TFM 550 is designed to provide secondary airborne communications to facilitate operations which are typically performed in a low altitude environment. The transmitter sections of this unit have a minimum of 8 watts output power, which may be reduced by a front panel switch to 1 watt.

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Technisonic Industries Limited Airborne transceiver TFM 550 Installation and Operating Instructions | Manualzz

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Key features

  • Frequency agile, fully synthesized airborne FM transceiver
  • Operates in a wide frequency range
  • Selectable channel spacing of either 25 kHz or 12.5 kHz
  • 200 memory positions per band
  • Cross band repeat function
  • PC Memory upload or download capability
  • Switchable 1 Watt or 8-10 Watt output power
  • Scan function
  • Direct frequency entry mode
  • Receive frequency simplex function

Frequently asked questions

The TFM-550 transceiver can operate in the 30 to 50 MHz, 138 to 174 MHz and 403 to 512 MHz frequency range.

The TFM 550 is designed to provide secondary airborne communications to facilitate operations typically performed in a low altitude environment.

Channel spacing refers to the separation between the frequencies used for different communication channels. This is related to how many different channels can operate in a specific frequency band. 25 kHz channel spacing is the standard, and 12.5 kHz channel spacing is narrowband which allows more channels to operate in a specific band.

The TFM 550 provides 200 operator accessible memory positions per band.

The TFM 550 can be set to output 1 watt or 8-10 watts.
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