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Garmin GNC 255 Pilot's Guide
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GNC 255A/255B
Pilot’
s Guide
2
Table of Contents
Default Chapter
3
Limited Warranty
3
Product Registration and Support
7
Table of Contents
9
1 Getting Started
13
Product Description
13
Pilot Controls
14
Power/Com Volume/Squelch Knob
14
Nav Volume/ID Knob
14
Tuning LARGE/SMALL Concentric (Cursor) Knobs
15
FLIP/FLOP Key
15
C/N (Com/Nav) Key
15
OBS Key
15
T/F (To/From) Key
15
CLR (Clear) Key
15
ENT (Enter) Key
15
FUNC (Function) Key
16
MON (Monitor) Key
16
USB Port
16
2 Basic Operation
17
Power on
17
Com Radio
17
Selecting a Com Frequency
17
Monitoring the Standby Com Channel
18
Saving a Com Channel
18
Com Database Look-Up
20
Frequency Database Reverse Look-Up
20
Emergency Channel
21
Stuck MIC
21
Remote Frequency Selection Control
21
Nav Radio
22
Selecting a Nav Frequency
22
Saving a Nav Channel
22
Listening to the Nav Audio Channel
23
OBS Mode
24
Distance/Speed/Time (DST) Display
25
3 Functions
27
Functions Description
27
Com Frequencies
28
Recent Com Frequencies
28
Com User Frequencies
29
Viewing the Com User Frequency
29
Deleting the Com User Frequency
29
Editing a Com User Frequency
30
Com Database Frequencies
31
Com Nearest Airports (APT)
32
Com Nearest Area Control Center (ACC) Frequencies
33
Com Nearest Flight Service Station (FSS) Frequencies
34
Com Nearest Weather (WX) Frequencies
35
Nav Frequencies
36
Recent Nav Frequencies
36
Nav User Frequencies
37
Viewing the Nav User Frequency
37
Deleting the Nav User Frequency
37
Editing a Nav User Frequency
38
Nav Database Frequencies
39
Nav Nearest vor
40
ICS Configuration
41
Adjust Intercom
41
Aux Audio
42
Intercom On/Off
43
Speaker On/Off
43
System Configuration
44
Com Spacing
44
Display Brightness
45
Display Contrast
46
Database Info
46
Load Database
47
Software Version
48
Serial Number
48
Timers
49
Setting up the Count down Timer
49
Setting up the Count up Timer
50
Garmin GNC 255A/255B Pilot's Guide 190-01182-01 Rev. a
50
Viewing Timers in the Com Display
50
4 Appendix
53
Troubleshooting
53
Updating the Frequency Database
55
Downloading the Frequency Database
55
Updating the GNC 255 Frequency Database
55
Messages
56
Index
61
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Installation Manual
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Garmin GNC 255 Specifications
General
Channels
760
Frequency Range
118.000 to 136.975 MHz
Channel Spacing
25 kHz
Input Voltage
11 to 33 VDC
Dimensions
159 x 50 x 193 mm
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