GNC255A/255B Pilot's Guide
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... OR INABILITY TO USE THE PRODUCT OR FROM DEFECTS IN THE PRODUCT. Online Auction Purchases: Products purchased through a Garmin Authorized Service Center; International Purchases: A separate warranty may be responsible for service. A Garmin GNC 255A/255B Pilot's Guide i THE WARRANTIES AND REMEDIES CONTAINED HEREIN ARE EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES, WHETHER EXPRESS...
... OR INABILITY TO USE THE PRODUCT OR FROM DEFECTS IN THE PRODUCT. Online Auction Purchases: Products purchased through a Garmin Authorized Service Center; International Purchases: A separate warranty may be responsible for service. A Garmin GNC 255A/255B Pilot's Guide i THE WARRANTIES AND REMEDIES CONTAINED HEREIN ARE EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES, WHETHER EXPRESS...
GNC255A/255B Pilot's Guide
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... (1) this device may differ slightly from the actual equipment. This will prevent the loss of the FCC Rules. ii Garmin GNC 255A/255B Pilot's Guide 190-01182-01 Rev. NOTE: Do not use outdated database information. CLEANERS CONTAINING AMMONIA WILL HARM THE ...to cause cancer, birth defects, or reproductive harm. This notice is specified as safe for anti-reflective coatings. CAUTION: The Garmin GNC 255 does not contain any interference received, including interference that the information remains current. Pilots using a clean, lint-free cloth and...
... (1) this device may differ slightly from the actual equipment. This will prevent the loss of the FCC Rules. ii Garmin GNC 255A/255B Pilot's Guide 190-01182-01 Rev. NOTE: Do not use outdated database information. CLEANERS CONTAINING AMMONIA WILL HARM THE ...to cause cancer, birth defects, or reproductive harm. This notice is specified as safe for anti-reflective coatings. CAUTION: The Garmin GNC 255 does not contain any interference received, including interference that the information remains current. Pilots using a clean, lint-free cloth and...
GNC255A/255B Pilot's Guide
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NOTE: Canadian installations: In accordance with Canadian Radio Specifications Standard 102 (RSS 102), RF field strength exposure to persons from an antenna connected to this device should be limited to 60 V/m for controlled environment and 28 V/m for uncontrolled environment. 190-01182-01 Rev. A Garmin GNC 255A/255B Pilot's Guide iii
NOTE: Canadian installations: In accordance with Canadian Radio Specifications Standard 102 (RSS 102), RF field strength exposure to persons from an antenna connected to this device should be limited to 60 V/m for controlled environment and 28 V/m for uncontrolled environment. 190-01182-01 Rev. A Garmin GNC 255A/255B Pilot's Guide iii
GNC255A/255B Pilot's Guide
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...installation. To obtain accessories for additional help if these remedies do not correct the problem. Please, have the serial number of your Garmin dealer. Operation of this device is subject to skin oils, waxes and abrasive cleaners. Consult an authorized dealer or other qualified avionics... to radio communications. Help us better support you will not occur in accordance with the instructions, may cause undesired operation. iv Garmin GNC 255A/255B Pilot's Guide 190-01182-01 Rev. The display surface is coated with a special anti-reflective coating which is no guarantee that...
...installation. To obtain accessories for additional help if these remedies do not correct the problem. Please, have the serial number of your Garmin dealer. Operation of this device is subject to skin oils, waxes and abrasive cleaners. Consult an authorized dealer or other qualified avionics... to radio communications. Help us better support you will not occur in accordance with the instructions, may cause undesired operation. iv Garmin GNC 255A/255B Pilot's Guide 190-01182-01 Rev. The display surface is coated with a special anti-reflective coating which is no guarantee that...
GNC255A/255B Pilot's Guide
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...: 1-866-429-9296 190-01182-01 Rev. Product Registration and Support Help us better support you have any questions, the Garmin Product Support department may be sure to record your serial number in the space provided. A Garmin GNC 255A/255B Pilot's Guide v Have the serial number of your product handy and connect to the...
...: 1-866-429-9296 190-01182-01 Rev. Product Registration and Support Help us better support you have any questions, the Garmin Product Support department may be sure to record your serial number in the space provided. A Garmin GNC 255A/255B Pilot's Guide v Have the serial number of your product handy and connect to the...
GNC255A/255B Pilot's Guide
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A Garmin GNC 255A/255B Pilot's Guide vii Contents Product Registration and Support v 1 Getting Started 1-1 1.1 Product Description 1-1 1.2 Pilot Controls 1-2 1.2.1 Power/Com Volume/Squelch Knob 1-2 1.2.2 Nav Volume/ID Knob 1-2 1.2.3 Tuning LARGE/...
A Garmin GNC 255A/255B Pilot's Guide vii Contents Product Registration and Support v 1 Getting Started 1-1 1.1 Product Description 1-1 1.2 Pilot Controls 1-2 1.2.1 Power/Com Volume/Squelch Knob 1-2 1.2.2 Nav Volume/ID Knob 1-2 1.2.3 Tuning LARGE/...
GNC255A/255B Pilot's Guide
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... Database 3-21 3.5.6 Software Version 3-22 3.5.7 Serial Number 3-22 3.6 Timers 3-23 3.6.1 Setting Up the Count Down Timer 3-23 3.6.2 Setting Up the Count Up Timer 3-24 viii Garmin GNC 255A/255B Pilot's Guide 190-01182-01 Rev. A
... Database 3-21 3.5.6 Software Version 3-22 3.5.7 Serial Number 3-22 3.6 Timers 3-23 3.6.1 Setting Up the Count Down Timer 3-23 3.6.2 Setting Up the Count Up Timer 3-24 viii Garmin GNC 255A/255B Pilot's Guide 190-01182-01 Rev. A
GNC255A/255B Pilot's Guide
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A Garmin GNC 255A/255B Pilot's Guide ix 3.6.3 Viewing Timers in the Com Display 3-24 4 Appendix 4-1 4.1 Troubleshooting 4-1 4.2 Updating the Frequency Database 4-3 4.2.1 Downloading the Frequency Database 4-3 4.2.2 Updating the GNC 255 Frequency Database 4-3 4.3 Messages 4-4 Index...Index-1 190-01182-01 Rev.
A Garmin GNC 255A/255B Pilot's Guide ix 3.6.3 Viewing Timers in the Com Display 3-24 4 Appendix 4-1 4.1 Troubleshooting 4-1 4.2 Updating the Frequency Database 4-3 4.2.1 Downloading the Frequency Database 4-3 4.2.2 Updating the GNC 255 Frequency Database 4-3 4.3 Messages 4-4 Index...Index-1 190-01182-01 Rev.
GNC255A/255B Pilot's Guide
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GNC255A/255B Pilot's Guide
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... localizer is available in a small footprint at a very affordable price. A Garmin GNC 255A/255B Pilot's Guide 1-1 Besides traditional Nav/Com features, the GNC 255 also incorporates workload-reducing functions such as automatic decoding of 8.33 kHz steps is also available. The GNC 255 is tuned. The GNC 255's Com radio operates in the aviation voice band, from 108 MHz...
... localizer is available in a small footprint at a very affordable price. A Garmin GNC 255A/255B Pilot's Guide 1-1 Besides traditional Nav/Com features, the GNC 255 also incorporates workload-reducing functions such as automatic decoding of 8.33 kHz steps is also available. The GNC 255 is tuned. The GNC 255's Com radio operates in the aviation voice band, from 108 MHz...
GNC255A/255B Pilot's Guide
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.../Com Volume/Squelch knob to toggle automatic squelch control On/Off for the Nav radio. 1.2 Pilot Controls The GNC 255 controls have been designed to simplify operation of the Nav active frequency. 1-2 Garmin GNC 255A/255B Pilot's Guide 190-01182-01 Rev. You may override the squelch function by pressing the Power/Com Volume/Squelch...
.../Com Volume/Squelch knob to toggle automatic squelch control On/Off for the Nav radio. 1.2 Pilot Controls The GNC 255 controls have been designed to simplify operation of the Nav active frequency. 1-2 Garmin GNC 255A/255B Pilot's Guide 190-01182-01 Rev. You may override the squelch function by pressing the Power/Com Volume/Squelch...
GNC255A/255B Pilot's Guide
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..., to confirm a prompt, or to save the Standby frequency. 190-01182-01 Rev. The T/F key does not operate for tuning frequencies and data entry. A Garmin GNC 255A/255B Pilot's Guide 1-3 LARGE, Outer Knob SMALL, Inner Knob 1.2.4 FLIP/FLOP Key Press and release the FLIP/FLOP key to switch between the bearing TO or...
..., to confirm a prompt, or to save the Standby frequency. 190-01182-01 Rev. The T/F key does not operate for tuning frequencies and data entry. A Garmin GNC 255A/255B Pilot's Guide 1-3 LARGE, Outer Knob SMALL, Inner Knob 1.2.4 FLIP/FLOP Key Press and release the FLIP/FLOP key to switch between the bearing TO or...
GNC255A/255B Pilot's Guide
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... may be monitored while still listening to the Active frequency. 1.3 USB Port The USB port is used to update the frequency database in the GNC 255. NOTE: Garmin recommends the use of a USB 2.0 compatible USB flash drive for the following: the Com Radio, Nav Radio, ICS Configuration, System Configuration, ...and Timer. 1.2.10 FUNC (Function) Key The FUNC (Function) key accesses function categories for updating the database. 1-4 Garmin GNC 255A/255B Pilot's Guide 190-01182-01 Rev. A Pressing the FUNC key once displays the Function mode.
... may be monitored while still listening to the Active frequency. 1.3 USB Port The USB port is used to update the frequency database in the GNC 255. NOTE: Garmin recommends the use of a USB 2.0 compatible USB flash drive for the following: the Com Radio, Nav Radio, ICS Configuration, System Configuration, ...and Timer. 1.2.10 FUNC (Function) Key The FUNC (Function) key accesses function categories for updating the database. 1-4 Garmin GNC 255A/255B Pilot's Guide 190-01182-01 Rev. A Pressing the FUNC key once displays the Function mode.
GNC255A/255B Pilot's Guide
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... to reach the Com radio function. Turn the SMALL knob to the identifier. Frequencies with the FLIP/FLOP key. A Garmin GNC 255A/255B Pilot's Guide 2-1 2 BASIC OPERATION 2.1 Power On Turn the GNC 255 on by either turning the Power/Com Volume/ Squelch knob clockwise to turn the power on or, if installed, turning ...and 136 in one MHz steps. 3. While viewing the Standby frequency display, use the LARGE and SMALL knobs on the top line of the GNC 255 to the Active side with multiple types will show. 2. The MHz selection range is between 000 and 975 kHz in 25 kHz steps or 000...
... to reach the Com radio function. Turn the SMALL knob to the identifier. Frequencies with the FLIP/FLOP key. A Garmin GNC 255A/255B Pilot's Guide 2-1 2 BASIC OPERATION 2.1 Power On Turn the GNC 255 on by either turning the Power/Com Volume/ Squelch knob clockwise to turn the power on or, if installed, turning ...and 136 in one MHz steps. 3. While viewing the Standby frequency display, use the LARGE and SMALL knobs on the top line of the GNC 255 to the Active side with multiple types will show. 2. The MHz selection range is between 000 and 975 kHz in 25 kHz steps or 000...
GNC255A/255B Pilot's Guide
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... a Com Channel The current Standby frequency may be deleted from the Com display or the Com User Function. After selecting the desired characters, press ENT. 2-2 Garmin GNC 255A/255B Pilot's Guide 190-01182-01 Rev. A small "MN" will be active. 2. Number of Frequencies Saved Press the ENT Key to Save Press the CLR...
... a Com Channel The current Standby frequency may be deleted from the Com display or the Com User Function. After selecting the desired characters, press ENT. 2-2 Garmin GNC 255A/255B Pilot's Guide 190-01182-01 Rev. A small "MN" will be active. 2. Number of Frequencies Saved Press the ENT Key to Save Press the CLR...
GNC255A/255B Pilot's Guide
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... Departure CLR Clearance CTAF Common Traffic Advisory Frequency FSS Flight Service Station RFS Remote Flight Service Station MF Mandatory Frequency UNI Unicom Blank None Table 2-1 - A Garmin GNC 255A/255B Pilot's Guide 2-3 Turn the SMALL knob to select the waypoint Type. 6. Com Frequency Type List 7.
... Departure CLR Clearance CTAF Common Traffic Advisory Frequency FSS Flight Service Station RFS Remote Flight Service Station MF Mandatory Frequency UNI Unicom Blank None Table 2-1 - A Garmin GNC 255A/255B Pilot's Guide 2-3 Turn the SMALL knob to select the waypoint Type. 6. Com Frequency Type List 7.
GNC255A/255B Pilot's Guide
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..., the selected waypoint and type will be remembered for 30 minutes. Airport Identifier Shown For Freqs In Database Figure 2-8 Frequency Database Reverse Look-Up 2-4 Garmin GNC 255A/255B Pilot's Guide 190-01182-01 Rev. Press ENT to scroll through the list of waypoint types. After selecting the desired characters, press ENT. Turn the...
..., the selected waypoint and type will be remembered for 30 minutes. Airport Identifier Shown For Freqs In Database Figure 2-8 Frequency Database Reverse Look-Up 2-4 Garmin GNC 255A/255B Pilot's Guide 190-01182-01 Rev. Press ENT to scroll through the list of waypoint types. After selecting the desired characters, press ENT. Turn the...
GNC255A/255B Pilot's Guide
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...for approximately two seconds, on units so configured, will "wrap" from the bottom of the displayed frequency. 2.2.7 Stuck Mic The GNC 255 helps protect you from a situation where the microphone may get stuck in Com frequency until the transmit key is unlocked, by ... ON or Transmit position. A "Stuck Mic" message will become the Standby Frequency. Figure 2-9 Emergency Channel 2. 2.2.6 Emergency Channel 1. A Garmin GNC 255A/255B Pilot's Guide 2-5 NOTE: Under some circumstances if the Com system loses communication with the main system, the radio will load the next preset...
...for approximately two seconds, on units so configured, will "wrap" from the bottom of the displayed frequency. 2.2.7 Stuck Mic The GNC 255 helps protect you from a situation where the microphone may get stuck in Com frequency until the transmit key is unlocked, by ... ON or Transmit position. A "Stuck Mic" message will become the Standby Frequency. Figure 2-9 Emergency Channel 2. 2.2.6 Emergency Channel 1. A Garmin GNC 255A/255B Pilot's Guide 2-5 NOTE: Under some circumstances if the Com system loses communication with the main system, the radio will load the next preset...
GNC255A/255B Pilot's Guide
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... FLIP/FLOP key to toggle the Standby frequency to move the cursor. The Waypoint name field will show. 2. After selecting the desired characters, press ENT. 2-6 Garmin GNC 255A/255B Pilot's Guide 190-01182-01 Rev. NOTE: Both Nav and Com frequencies cannot be displayed at the same time. 2.3.2 Saving a Nav Channel The current...
... FLIP/FLOP key to toggle the Standby frequency to move the cursor. The Waypoint name field will show. 2. After selecting the desired characters, press ENT. 2-6 Garmin GNC 255A/255B Pilot's Guide 190-01182-01 Rev. NOTE: Both Nav and Com frequencies cannot be displayed at the same time. 2.3.2 Saving a Nav Channel The current...
GNC255A/255B Pilot's Guide
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... Measuring Equipment LOC Localizer ILS Instrument Landing System 01-36 Runway Heading Blank None Table 2-2 - When Nav ident is adjusted using the Nav Volume knob. A Garmin GNC 255A/255B Pilot's Guide 2-7 Nav Frequency Type List 2.3.3 Listening to move the cursor. 5. Turn the Nav Volume knob clockwise to increase volume, or counterclockwise to the...
... Measuring Equipment LOC Localizer ILS Instrument Landing System 01-36 Runway Heading Blank None Table 2-2 - When Nav ident is adjusted using the Nav Volume knob. A Garmin GNC 255A/255B Pilot's Guide 2-7 Nav Frequency Type List 2.3.3 Listening to move the cursor. 5. Turn the Nav Volume knob clockwise to increase volume, or counterclockwise to the...