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. The 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
VOL
knob clockwise to apply power to the radio.
3. Set the
VOL
for a comfortable listening level.
4. Set the
MODE
switch to the desired mode.
5. Listen to the background noise from the speaker. Turn the
SQ
knob slowly
clockwise until the noise just disappears. The
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 RF gain.
C. 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.
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 a 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 the fourth
is for receiving control.
The microphone should provide the functions shown in schematic below.
4 WIRE MIC CABLE
Receive Control
4
Transmit Control
3
Audio Lead
2
Audio Shield
1
Mic Cable Lead
Pin Number
Fig. 1
Your transceiver microphone schematic.
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