Specifications

123
Level Setting Procedures
the PTT button, and speak in a normal volume with your mouth a typical distance
from the mouthpiece. Adjust the MIC control (R63) for a nominal reading of 0.4
Vp-p (peak amplitude should be 1.0 Vp-p). Hang up the handset when you are
finished making the adjustment.
10. Disconnect the oscilloscope from the Station Transponder Unit.
11. Configure your service monitor to provide a deviation reading on the transmit
frequency of the radio interfaced to the Station Transponder Unit.
12. Lift the station handset, press the PTT button, and speak in a normal volume with
your mouth a typical distance from the mouthpiece. Adjust the transmit audio level
controls on the radio (or R63 in the Station Transponder Unit if that is more
convenient) to achieve the proper carrier deviation on the transmit frequency.
13. When you are finished with the adjustment, hang up the handset and close up the
Station Transponder Unit.
14. Have operator initiate an Alert with PA from the console position to the target
Station Transponder Unit. Adjust the volume control on the external PA amplifier
to achieve the correct loud speaker output in the station.
15. When you have completed your adjustments, have the operator unselect the station
at the console and move on to the next unit.