TM 1-1510-225-10
3B-3
1. Pilot's COMM 1 Switch
2. Pilot's COMM 2 Switch
3. Pilot's HF Switch
4. Pilot's MBND Radio
5. Pilot's NAV 1 Switch
6. Pilot's NAV 2 Switch
7. Pilot's MKR BCN 1 Switch
8. Pilot's MKR BCN 2 Switch
9. Pilot's DME Switch
10. Pilot's ADF Switch
11. Copilot's COMM 1 Switch
12. Copilot's COMM 2 Switch
13. Copilot's HF Switch
14. Copilot's MBND Radio
15. Copilot's NAV 1 Switch
16. Copilot's NAV 2 Switch
17. Copilot's MKR BCN 1 Switch
18. Copilot's MKR BCN 2 Switch
19. Copilot's DME Switch
20. Copilot's ADF Switch
21. Copilot's Transmitter Selector
22. Copilot's AUDIO SPKR / OFF
Switch
23. Copilot's
VOICE
/
BOTH
/
RANGE Switch
24. HOT INTPH / OFF Switch
25. Pilot's VOICE / BOTH / RANGE
Switch
26. AUDIO EMER / NORM Switch
27. Pilot's
AUDIO
SPKR
/
OFF
Switch
28. Pilot's Transmitter Selector
Figure 3B-1. Dual Audio Control Panel
(14) Copilot’s MBND RADIO Switch – Selects
ARC-210 Radio transmitter.
(15) Copilot’s NAV 1 Switch – Selects No. 1
VOR audio.
(16) Copilot’s NAV 2 Switch – Selects No. 2
VOR audio.
(17) Copilot’s MKR BCN 1 Switch – Receives
audio from No. 1 marker beacon.
(18) Copilot’s MKR BCN 2 Switch – Receives
audio from No. 2 marker beacon.
(19) Copilot’s DME Switch – Receives DME
audio.
(20) Copilot’s ADF Switch – Receives ADF
audio.
(21) Copilot’s Transmitter Selector – Select
COMM 1, COMM 2, HF, MBND RADIO, INTP, or
CABIN.
(22) Copilot’s AUDIO SPKR/OFF Speaker
Switch – Routes audio to overhead speakers.
(23) Copilot’s VOICE / BOTH / RANGE
Switch.
(a) VOICE – Kills range; allows voice.
(b) BOTH – Allows both voice and range.
(c) RANGE – Kills voice; allows 1020 Hz
range tone.
(24) HOT INTPH / OFF Switch – Allows
interphone communication between pilot and copilot
without keying the MIC button.
