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Basic Operation of the Garmin GTN 650 GPS
Errol Chopping
Start Here.
If the GPS is already on, it will come alive when you switch on the avionics switch. If not,
once you have turned on the avionics switch then turn the GPS on with the button on its
top left.
When the GPS displays a ‘Continue’ button, touch it. Eventually you will see the home
screen, like this:
You can return to this screen anytime but touching the Home button on the GPS.
How to use the Com radio
Transmitting
The main audio panel, a separate component above the GPS, controls the MIC. If the
rotary dial on its right-hand side is pointing at C1, then the GPS Com radio is being used
to transmit. The GPS com radio is Com1. When you press the Press-To-Talk button on
the aircraft control wheel, you are transmitting using the selected MIC.
The frequency
On the top right of the screen on the GPS are the communications radio frequencies.
There are two frequencies, the one on the very top is currently being used, the one
below it is the standby.
