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

5.2CABIN SPEAKER

Pressing the SPKR Key selects and deselects the cabin speaker. All of the radios can be heard over the cabin speaker. SpeakeraudioismutedwhenthePTTispressed. Certain aural alerts and warnings (autopilot, traffic, altitude) are always heard on the speaker, even when the speaker is not selected.

Figure 5-3 Passenger Address and Speaker Keys

5.3PASSENGER ADDRESS (PA) SYSTEM (T)182T AND (T)206H ONLY

A passenger address system is available for delivering voice messages over the cabin speaker. When the PA Key isselectedontheAudioPanel,theCOMMICAnnunciator is extinguished, and the active COM frequency changes to white,indicatingthatthereisnoCOMselected. APush-to-

Talk (PTT) must be pressed to deliver PA announcements. The PA Annunciator flashes about once per second while the PTT is depressed.

5.4MARKER BEACON RECEIVER

The marker beacon receiver is always on. Only the marker beacon audio can be turned off. Figure 5-4 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/MUTEKey once mutes the audio but does not affect the marker annunciator. Theaudioreturnswhenthenextmarkersignal is received.

To turn off the marker beacon audio, press the MKR/ MUTEKey once when there is no marker indication present, or press twice when an indication is present. The key annunciator extinguishes when the marker beacon audio is turned off.

Altimeter

Figure 5-4 Marker Beacon Annunciators on the PFD

Marker Beacon Signal Sensitivity

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