SECTION 5 – AUDIO PANEL

5.1COM RADIO SELECTION

Pressing the COM1 MIC or COM2 MIC Key selects the active transmitter (i.e., microphone). The associated receiver audio (COM1 or COM2) also becomes selected when the COM MIC Key is pressed.

To prevent deselecting the desired received audio when pressing another COM MIC Key, press the already selected COM1 or COM2 Key before pressing the other COM MIC Key.

Figure 5-2 Transceivers

5.2MARKER BEACON RECEIVER

The marker beacon receiver is always on. Only the marker beacon audio can be turned off. Figure 5-3 shows the marker beacon annunciators on the PFD.

When the MKR/MUTE Key is pressed, the key annunciator is lit and the audio tone can be heard over the speaker or headsets during marker beacon reception.

When the tone is active, pressing the MKR/MUTE Key once mutes the audio but does not affect the marker annunciator. The audio returns when the next marker signal is received.

To turn off the marker beacon audio, press the MKR/ MUTE Key once when there is no marker indication present, or press twice when an indication is present. The key annunciator will be extinguished when the marker beacon audio is turned off.

Inner Marker

Annunciator

Figure 5-3 Marker Beacon Annunciators on the PFD

Marker Beacon Signal Sensitivity

The HI SENSKey can be pressed for increased marker beacon signal sensitivity.

Figure 5-4 Marker Beacon