# COM / NAV

![Ein Bild, das Text, Gerät, Messanzeige, Anzeige enthält.  Automatisch generierte Beschreibung](https://cdn.document360.io/417c2d4d-fdb8-4d4d-b11d-011fe445d776/Images/Documentation/primary-flight-display-pfd-image-15xntll9.png)

### PFD RADIO CURSOR BOX <a href="#toc118376591" id="toc118376591"></a>

* When the PFD is selected using the CCD, a cyan box ![](https://cdn.document360.io/417c2d4d-fdb8-4d4d-b11d-011fe445d776/Images/Documentation/primary-flight-display-pfd-image-3hjsinnd.png)is placed around the last selected radio frequency. The font size of the frequency digits and the radio source identifier become larger.
* Defaults to the original grey outline and the font decreases in size when mouse cursor is leaving the corresponding box.
* MCDU menu page can change COM1 to COM2 and NAV1 to NAV2 and vice versa.

{% hint style="info" %}
CCD is not simulated. Instead functionality is being provided by mouse over and clicking on the corresponding PFD areas.
{% endhint %}

![](https://cdn.document360.io/417c2d4d-fdb8-4d4d-b11d-011fe445d776/Images/Documentation/primary-flight-display-pfd-image-7xr0hjih.png)

### EXCHANGE PROMT <a href="#toc118376592" id="toc118376592"></a>

* Indicates the green active frequency data is exchanged with the white standby frequency when the CCD ENTER button pushed.

{% hint style="info" %}
CCD is not simulated. Instead you can click on the cyan icon to swap frequencies.
{% endhint %}

### ADJUST PROMT <a href="#toc118376593" id="toc118376593"></a>

* Indicates the frequency is changed using the CCD rotary knobs.

![](https://cdn.document360.io/417c2d4d-fdb8-4d4d-b11d-011fe445d776/Images/Documentation/primary-flight-display-pfd-image-tgpb9xbo.png)

{% hint style="info" %}
CCD is not simulated. Instead you can use your mouse wheel to change standby frequency when hovering over it with the mouse.
{% endhint %}

### COM FREQUENCY AND IDENTIFIER DISPLAY <a href="#toc118376594" id="toc118376594"></a>

* White COM source identifier annunciator.
* Green COM active frequency.
* White COM standby frequency.

### NAV FREQUENCY AND IDENTIFIER DISPLAY <a href="#toc118376595" id="toc118376595"></a>

* White NAV source identifier annunciator
* Green active frequency when manually tuned or magenta when auto tuned.
* White NAV standby frequency.