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Marine Radio
Garmin
255A manual
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Contents
Main
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LIMITED WARRANTY
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Product Registration and Support
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Contents
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1 GETTING STARTED
1.1 Product Description
1.2 Pilot Controls
1.2.1 Power/Com Volume/Squelch Knob
1.2.2 Nav Volume/ID Knob
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1.2.10 FUNC (Function) Key
1.2.11 MON (Monitor) Key
1.3 USB Port
2 BASIC OPERATION
2.1 Power On
2.2 Com Radio
2.2.1 Selecting a Com Frequency
2.2.2 Monitoring the Standby Com Channel
2.2.3 Saving a Com Channel
7. After making a selection, press ENT.
2.2.4 Com Database Look-Up
2.2.5 Frequency Database Reverse Look-Up
2.2.6 Emergency Channel
2.2.7 Stuck Mic
2.2.8 Remote Frequency Selection Control
2.3 Nav Radio
2.3.1 Selecting a Nav Frequency
The selection of Nav frequencies is the same as for the Com frequencies.
2.3.2 Saving a Nav Channel
2.3.3 Listening to the Nav Audio Channel
2.4 OBS Mode
2.5 Distance/Speed/Time (DST) Display
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3 FUNCTIONS
3.1 Functions Description
Timers
Nav Freq
Com Freq
3.2 Com Frequencies
3.2.1 Recent Com Frequencies
3.2.2 Com User Frequencies
Fifteen Com User Frequencies can be saved with an assigned waypoint (WPT) identier and Type.
3.2.2.1 Viewing the Com User Frequency
3.2.2.2 Deleting the Com User Frequency
3.2.2.3 Editing a Com User Frequency
3.2.3 Com Database Frequencies
The GNC 255 contains a large database of Com frequencies that may be recalled by identier.
3.2.4 Com Nearest Airports (APT)
3.2.5 Com Nearest Area Control Center (ACC) Frequencies
3.2.6 Com Nearest Flight Service Station (FSS) Frequencies
3.2.7 Com Nearest Weather (WX) Frequencies
3.3 Nav Frequencies
3.3.1 Recent Nav Frequencies
3.3.2 Nav User Frequencies
3.3.2.2 Deleting the Nav User Frequency
3.3.2.3 Editing a Nav User Frequency
3.3.3 Nav Database Frequencies
The GNC 255 contains a large database of Nav frequencies that may be recalled by identier.
Duplicate Identiers
3.3.4 Nav Nearest VOR
The GNC 255, when interfaced with an appropriate GPS receiver, will report the 25 nearest VORs.
3.4 ICS Conguration
3.4.1 Adjust Intercom
3.4.2 Aux Audio
The Aux function allows you to turn Aux Audio On/Off and set the volume value.
3.4.3 Intercom On/Off
3.4.4 Speaker On/Off
The Speaker On/Off function toggles speaker output on and off.
3.5 System Conguration
3.5.1 Com Spacing
3.5.2 Display Brightness
3.5.3 Display Contrast
3.5.4 Database Info
3.5.5 Load Database
The GNC 255 has a USB connector to allow for easily updating the system databases.
3.5.6 Software Version
3.5.7 Serial Number
3.6 Timers
3.6.1 Setting Up the Count Down Timer
3.6.2 Setting Up the Count Up Timer
3.6.3 Viewing Timers in the Com Display
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4 APPENDIX
4.1 Troubleshooting
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4.2 Updating the Frequency Database
4.2.1 Downloading the Frequency Database
4.2.2 Updating the GNC 255 Frequency Database
4.3 Messages
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INDEX
A
B
C
D