Galaxy DX-939 Manuale d'uso - Pagina 7

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PROCEDURE TO RECEIVE AND TRANSMIT

A. MICROPHONE

The receiver and transmitter are controlled by the push-to-talk switch on the

microphone. Press the switch and the transmitter is activated, release switch to

receive. When transmitting, hold the microphone two inches from the mouth and

speak clearly in a normal voice. This transceiver comes complete with a low

impedance dynamic microphone.

B. PROCEDURE TO RECEIVE

1. Be sure that power source, microphone and antenna are connected to the proper

connectors before going to the next step.

2. Turn unit on by running VOL knob clockwise on transceiver.

3. Set the VOL for a comfortable listening level.

4. Set the PA/CB switch to the CB mode.

5. Listen to the background noise from the speaker. Turn the SQ knob slowly

clockwise until the noise just disappears. Leave the control at this setting. This

SQ is now properly adjusted. The receiver will remain quiet until a signal is

actually received. Do not advance the control too far or some of weaker signals

will not be heard.

6. Set the CHANNEL selector switch to the desired channel.

7. Set the RF GAIN control fully clockwise for maximum receive gain.

C. RF POWER CONTROL

This feature allows for the adjustment of the RF power output continuously over

the range of 1 to 4 watts in AM.

D. PROCEDURE TO TRANSMIT

1. Select the desired channel of transmission

2. Set the MIC GAIN control fully clockwise.

3. If the channel is clear, depress the push-to-talk switch on the microphone and

speak in a normal voice.

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ALTERNATE MICROPHONES AND INSTALLATION

For best results, the user should select a low-impedance dynamic type

microphone or a transistorized microphone. Transistorized type microphones have

low output impedance characteristics. The microphones must be provided with a

four-lead cable. The audio conductor and its shielded lead comprise two of the

leads. The third lead is for transmit control and fourth is for receiving control.

The microphone should provide the functions shown in schematic below.

4 WIRE MIC CABLE

Pin Number

Fig. 1 Your transceiver microphone schematic.

If the microphone to be used is provided with pre-cut leads, they must be revised

as follows.

1. Cut leads so that they extend 7/16" beyond the plastic insulating jacket of the

microphone cable.

2. All leads should be cut to the same length. Strip the ends of each wire 1/8" and

tin the exposed wire.

Mic Cable Lead

Audio Shield

Audio Lead

Transmit Control

Receive Control

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