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43. Talk: Press this momentary switch to speak through the headset microphone and onto the
intercom line. The mic level is adjusted by the Mic Gain trim pot (#45) and the amount of your mic
signal fed back into your headset is adjusted by the Side Tone trim pot (#46).
44. HP Level: This control sets the overall level of the signals coming to you via the intercom line
as well as your mic signal fed back into the headphones. You might also call this control the
Headphone Master Volume.
45. Mic Gain: This trim pot sets the output level of your headset microphone that is sent to the
intercom line. Adjusting this control changes the level of your mic making it optimal for the listener
at the other end of the intercom line.
46. Side Tone: This trim pot sets the amount of your headset mic that is fed back into your head-
phones. Since you will not hear yourself very well with headphones on, this control will mix in a
little of your mic signal so that you can “hear yourself talk.”
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