BOMBARDIER Challenger 650 Handbook page 73

COMMUNICATION AND CONTROL
64
VHF VHF VHF 3 VHF 3
1 1 2 2
DME DME
1 1 2 2
NAV NAV
1 1 2 2
R/T R/T VOICE VOICE
I/C I/C BOTH BOTH
Observer Audio Control Panel
Figure 35
6076 (Rev. 2) Dec 12 2016
HF HF INT/SVC INT/SVC
1 1 2 2
1 1 ADF ADF 2 2
MKR MKR
1 1 2 2
SPKR SPKR MASK MASK EMER EMER
BOOM BOOM NORM NORM