|Dimensions:||1.65" H x 6.25" W x 10.4" D (11.23" D behind panel, including mounting rack and connectors)||Weight:||3.02 lbs unit only; 3.46 lbs with mounting rack|
|Altitude:||55,000 ft||Temperature Range:||-20C to +55C|
|Input Voltage range:||9 to 33 VDC||Transmit power:||16 W|
|Certifications:||TSO C169a (transmitting and receiving), TSO C128a (stuck mic)|
|Part Number||VHF NAV/COm Description:|
|Please Note: Garmin "010" P/N's are Catalog ONLY|
|010-00999-00||Unit Only Kit|
|011-02719-00||Unit Only P/N|
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The GNC-255A/B uses a standard USB memory device to load the frequency database. The memory device is not provided by Garmin. The Frequency database is stored internally and the USB memory device is only used to transfer the database into the unit.
The GNC-255A/B contains a large database of Com frequencies that may be recalled by identifier.
The GNC-255's Com radio operates in the aviation voice band, from 118.000 to 136.975 MHz, in 25 kHz steps (default). For European operations, a Com radio configuration of 8.33 kHz steps is also available. The GNC-255 VHF Nav receiver operates from 108 MHz to 117.95 MHz decoding both the VHF Omni Range and Localizer navigation signals. The built-in Glideslope receiver will automatically tune the corresponding glideslope paired frequencies (328 MHz to 335 MHz) when the localizer is tuned. The GNC 255 is available in 10 and 16 watt com transmitter versions. The GNC 255A is available with a 10 watt com transmitter. The GNC 255B is available with a 16 watt com transmitter.
The current Standby frequency may be saved into the Com or Nav User Frequency database from the Com or Nav display. The Com and Nav User Frequency database can hold up to 15 frequencies each.
When the GNC-255A/B has received data from an external device, such as a GPS receiver or DME sensor through the serial port, speed, time, and distance data will be available. If you are not connected to an external sensor, you will not see this display.