Garmin GTR 225 User Manual

190-01182-02 GTR 225/GNC 255 TSO Installation Manual
Rev. F Page 1-13
1.11 GTR/GNC Database
The GTR/GNC has a database of frequencies for airports and VORs. GTR/GNC users update the
frequency database by purchasing database subscription updates from Garmin. The frequency database is
stored internally and uses a USB flash drive to transfer the database into the unit. Refer to the applicable
GTR or GNC pilot's guide, contact Garmin at (866) 739-5687, or go to flyGarmin.com
for more
information and instructions.
The GTR/GNC database has no safety effect, and does not claim compliance with RTCA/DO-200A
Standards for Processing Aeronautical Data.
Garmin requests that the flight crew report any observed discrepancies related to database information.
These discrepancies could come in the form of an incorrect frequency, incorrectly identified airport, VOR,
or other station, or any other displayed item used for navigation or communication in the air or on the
ground. Go to flyGarmin.com
and select “Aviation Data Error Report.”

Garmin GTR 225 Specifications

General

Input Voltage	11-33 VDC
Operating Voltage	11-33 VDC
Operating Temperature	-20°C to +55°C
Frequency Range	118.000 MHz to 136.975 MHz
Channel Spacing	25 kHz
Transmit Power	10 W
Current Consumption	1.5 A (max transmit)