Control & Connections; Front Panel - Galaxy DX 959 Service Manual

Figure 2-1 Front Panel
2.0 INTRODUCTION
This section explains the basic operating procedures for the Galaxy DX 959 mobile transceiver.
2.1 CONTROL AND CONNECTIONS

2.1.1 FRONT PANEL

Refer to the above Figure 2-1 for the location of the following controls.
1. SQUELCH CONTROL
This control is used to control or eliminate receiver background noise in the absence of an
incoming signal. For maximum receiver sensitivity, it is desired that the control be adjusted only
to the point where the receiver background noise is eliminated. Turn fully counter-clockwise, then
slowly clockwise until the receiver noise disappears. Any signal to be received must now be
slightly stronger than the average received noise. Further clockwise rotation will increase the
threshold level which a signal must overcome in order to be heard. Only strong signals will be
heard at a maximum clockwise setting.
2. ON/OFF VOLUME CONTROL
Turn clockwise to apply power to the radio and to set the desired listening level.
3. MIC GAIN
Adjusts the microphone gain in the transmit and PA modes. This controls the gain to the extent that
full talk power is available several inches away from the microphone. In the Public Address (PA)
mode, the control functions as the volume control. Pushing this knob turns the Roger Beep on and
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