COMMUNICATIONS, VHF COM
Description
Aircraft Operations Manual
4/3.1
PAGE
3
Apr 01/15
A28636
B
HAND MICROPHONE
PTT
D
I
S
C
A/P
A
CONTROL WHEEL
PTT BUTTON
C
B
A
B
C
XMIT SELECT
1 COM 2 COM 3
HF
INT
COLD
BOOM
HOT
MIC
MASK
NORM
EMER
1 NAV 2
MKR
PA
1 ADF 2
SPKR
VOICE
IDENT
PTT
C
AUDIO CONTROL PANEL, ACP
PTT button.
−
Press To Transmit.
Volume control for COM 1, and COM 2.
XMIT SELECT button.
Momentarily press associated button to select
COM for transmitting (COM 3 not used, ex-
cept with Mod. No. 3142 installed ).
NORM/EMER switch.
NORM
−
Control of the COM:s are managed
by the ACP.
EMER
−
Bypass of the REU if the audio
system fails.
−
Direct connection with the COM by
headset and control wheel PTT
button only.
−
For L side ACP; COM 1, L control
wheel PTT and L headset.
−
For R side ACP; COM 2, R control
wheel PTT and R headset.
−
Fixed volume.
Fig. 3 VHF COM
−
controls