The Bendix KX 165A Nav Com radio has four knobs and four buttons. Its display is divided in two segments. The left portion of the digital display readout is allocated for COMM ACTIVE and COMM STANDBY frequencies channels stored (this is a dummy function in this version). The right portion of the display is allocated to NAV receiver information and much more as shown below.

Clicking areas

Left segment pages

Two modes ar available, though Channel mode is a dummy mode, by now.

Pushing Channel button will show channels number stored for a few seconds. The big left knob will browse through the channels stored. When Ch is not visible this knob tune COM frequencies.

right segment pages

The right segment of the screen can display 9 different modes, you can browse with the MODE button.

ACTIVE / STAND BY mode

In this mode you can tune stby frquency with the right knob and swap frequencies with the transfer button

ACTIVE / CDI mode

Pushing MODE button will take you to this mode. The vertical “needle” moves side to side similar to a mechanical CDI. When the needle is centered, the aircraft is on the selected OBS course. When the active frequency is tuned to a VOR frequency, the center of the CDI scale displays the “TO” or “FROM” indicator.

The CDI needle may be automatically centered with a “TO” indication clicking on center of the knob. The CDI is displayed on the line below the frequency/OBS. When the ACTIVE frequency is tuned to a VOR frequency, the standby frequency area is replaced by a three digit OBS (Omni Bearing Selector) display. The desired OBS course can be selected with the right knob. When the ACTIVE window is tuned to a localizer frequency, the standby frequency area is replaced by “LOC”. When the received signal is too weak to ensure accuracy the display will flag.

ACTIVE / BEARING mode

Pushing MODE once more cause the NAV display to go to bearing mode of operation, the right hand window of NAV display shows the bearing TO the station.

ACTIVE / RADIAL mode

Another push of the MODE button will cause the NAV display to go from the ACTIVE/BEARING mode to the ACTIVE/RADIAL mode. The right hand window of NAV display shows the radial FROM the station.

TIMER mode

Another mode button click will cause the unit to go into the TIMER mode. When the unit is turned on the elapsed timer begins counting upwards from zero. The timer can be stopped by pushing the NAV frequency swap button or reset to zero clicking on area 16 (see above) causing the ET on the display to flash. In this state the timer can be set as a countdown timer or the elapsed timer can be restarted. If you click on swap button again the counter will restart from zero. If you use the knob in the right side countdown timer can be set to the desired time (while ET is blinking) and then pushing the NAV swap button countdown will start. The top side of the knob selects minutes, the bottom side of the knob selects seconds. After the countdown timer reaches zero, the counter will come up, whatever the mode you are in, and will begin to count upwards indefinitely while flashing for a few seconds, returning then to the mode you were before, if it was different. The Audio Alert is then sounded.

ACTIVE / GPS modes

The following GPS modes are not described in the KX 165 guide but we have considered useful to include this modes. You go into these modes pushing MODE button as well.

GPS CDI and desired track

Next waypoint distance and ident

Bearing to next waypoint distance and ident

Next waypoint ident ETE and ETA