INSTALLATION MANUAL ADDENDUM
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2.5.2
NAV Section Operation
NAV: DISPLAY
The left side of the display identifies the NAV Active frequency.
The right side of the display identifies the NAV Standby frequency or Radial FROM the station.
The Standby frequency will momentarily be displayed upon turn ON, or frequency selection. After
several seconds, the radial FROM the station (3 bars if no received signal) will be displayed. To recall the
Standby frequency, rotate the frequency select knob one (1) position, or press the Transfer button twice.
NAV: VOL-PULL IDENT
Minimum volume is the maximum counterclockwise rotation of this control.
VOL, continued clockwise rotation increases the NAV audio volume.
PULL-IDENT when pulled activates the IDENT circuit.
NAV: MHz/KHz CHANNEL SET KNOBS
Both these controls allow for continuous CW or CCW rotation. MHz frequency readout, in Standby
display, changes at a rate of 1 MHz per detent. Rotation of the KHz Knob steps the Standby
Frequency readout at a change rate of 50 KHz per detent.
Clockwise rotation increments the frequency, counterclockwise decrements the frequency. Rotate one
position to recall the standby frequency or press the transfer button (2) times.
NAV: HOW TO ENTER A FREQUENCY
All frequencies entered into the NAV Section enter via the Standby route; that is, the frequency is entered
(seen in the Standby displays) and then transferred to the Active by depressing the "arrowed" transfer
push button. The next frequency entered is the Standby frequency.
The Active frequency and its resultant data are not affected by the rotation of either of the MHz or Khz
knobs.
NAV: TRANSFER
Pressing the white arrowed momentary switch exchanges the Active and Standby frequencies.
NAV: KEEP-ALIVE
The last stored Active and Standby frequencies will be recalled at power turn ON
.
Summary of Contents for MK 12D PLUS TSO NAV/COM
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