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Push Buttons - FreeFlight FDL-978 User Manual

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2.5 Push Buttons

The TC978 control inputs, such as Squawk Codes, Call Sign/Flight ID, and mode control

(IDENT, Altitude Inhibit, transmit Standby) are configurable by the TC978 only when

external controls are not being used.

IDT

Press the IDT button when ATC instructs you to "Ident" or "Squawk Ident."

Pressing the FN button provides access to changing the Call Sign/Flight ID.

You may either directly rotate the CODE knob or press the ENT button and the

first character of the Call Sign/Flight ID will be highlighted. Use the rotary

CODE knob to select your choice of alpha-numeric characters. Press the ENT

button again and the cursor moves to the next character. You must press the

ENT button each time, all the way through the eight characters, to save your

Call Sign/Flight ID change.

Pressing the FN button again allows the user to view the present Global

Positioning System (GPS) position being transmitted.

FDL-978 ADS-B Equipment

Pilot Guide/User Manual

2-5

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