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海上ラジオ Garmin GTX 327のPDF パイロット・マニュアルをオンラインで閲覧またはダウンロードできます。Garmin GTX 327 8 ページ。 Mode a/c transponder
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Code Selection

Code selection is done with eight keys (0 – 7) that provide 4,096 active identification

codes. Pushing one of these keys begins the code selection sequence. The new code will not

be activated until the fourth digit is entered. Pressing the CLR key will move the cursor back

to the previous digit. Pressing the CLR key when the cursor is on the first digit of the code, or

pressing the CRSR key during code entry, will remove the cursor and cancel data entry,

restoring the previous code. The numbers 8 and 9 are not used for code entry, only for

entering a Count Down time, and in the Configuration Mode.

Important Codes:

1200

The VFR code for any altitude in the US (Refer to ICAO standards elsewhere)

7000

The VFR code commonly used in Europe (Refer to ICAO standards)

7500

Hijack code (Aircraft is subject to unlawful interference)

7600

Loss of communications

7700

Emergency

7777

Military interceptor operations (Never squawk this code)

0000

Military use (Not enterable)

Care should be taken not to select the code 7500 and all codes in the 7600-7777 range,

which trigger special indicators in automated facilities. Only the code 7500 will be decoded as

the hijack code. An aircraft' s transponder code (when available) is utilized to enhance the

tracking capabilities of the ATC facility, therefore care should be taken when making routine

code changes.

Keys for Other GTX 327 Functions

IDENT

(SPI) Pulse for 18 seconds, identifying your transponder return from others on the

air traffic controller' s screen. The word 'IDENT' will appear in the upper left corner

of the display while the IDENT mode is active.

VFR

Sets the transponder code to the pre-programmed VFR code selected in

Configuration Mode (this is set to 1200 at the factory). Pressing the VFR key again

will restore the previous identification code.

Pressing the IDENT key activates the Special Position Identification