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(2) On A50 audio control panel (5), if required, momentarily depress "COM1/M IC" button (7) [COM2/MIC"]. ACTION PMA 7000MS audio control panel (1) On A50 audio control panel (5), depress speaker audio selector button (3) "SPKR" . (2) On A50 audio control panel, set function selector (4) to "COM 1" ["COM 2"]. All (3) On transceiver, de-activate squelch function. If necessary, rotate volume knob to adjust audio level. (4) On transceiver activate squelch function. (5) On transceiver, select an active sequence NOTE : Choose a frequency to avoid disturbing neighbouring ground stations. (6) Depress pilot's control wheel push-to-talk switch (7) Release pilot's control wheel push-to-talk switch RESULT (a) The LED indicator light corresponding to the button comes on to confirm the selection. (a) Presence of a hissing sound in the loudspeaker (transceiver is operating unsquelched). (a) No more hissing sound in the loudspeaker (transceiver is operating squelched). Transceiver equipped with a transmission indicator (a) On transceiver, the transmission indicator appears to indicate the equipment is in the transmission mode. Transceiver equipped with a transmission indicator (a) On transceiver, the transmission indicator disappears. (8) On A50 audio control panel (5), de-activate loudspeaker function. 7) If necessary, connect headset equipment to pilot's or R.H. front station jacks (1). 8) On COM 1 [COM 2] transceiver, select the frequency of the chosen VHF ground station. Contact the station to check transceiver operation in both transmission and reception modes. NOTE : On A50 audio control panel, select headset listening and push-to-talk switch/mike function associated to COM 1 [COM 2] installation transceiver. 9) Set "RADIO MASTER" switch to "OFF". 10) Open main switch-breaker. 11) If connected, disconnect the ground power unit - refer to 24-40-00. 1 - Jacks 2 - Intercom volume control knob 3 - Speaker audio selector buttons 4 - Function selector 5 - A50 audio control panel 6 - Headset listening selector knobs 4 6 14231100AAAVVZ14000 O Speech communications — Adjustment / test |
