REAR PANEL
18. POWER:
Accepts 13.8V DC power cables with built-in fuse (4 amp.) to
be connected.
19. EXT SP:
Accepts 4 to 8 ohms, 5 watt external speaker to be connected.
When external speaker is connected to this jack, the built-in speaker is
automatically disconnected.
20. PA. SP:
Used to connect a PA speaker (8 ohm 4W) for PA operation.
Before operating PA you must first connect a PA speaker to this jack.
21. ANTENNA:
Accepts 50 ohm coaxial cable with a type PL-259 plug to
be connected.
22. F.C.:
The socket is optional for the accessories FREQUENCY
COUNTER mode FC-347, to indicate the value of the frequency ranges
used.
PRESS-TO-TALK MICROPHONE
The receiver and transmitter are controlled by the press-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 radios come complete with
low-impedance (500 ohm) dynamic microphone. For installation instructions
on other microphones, see next section, “ALTERNATE MICROPHONES
AND INSTALLATION”.
OPERATING
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 tuning
VOL
control clockwise on your transceiver.
3. Set the
VOLUME
for a comfortable listening level.
4. Set the
MODE
switch to the desire mode.
5. Listen to the background noise from the speaker. Turn the
SQUELCH
control slowly clockwise until the noise JUST disappears (no signal
should be present). Leave the control at this setting. The
SQUELCH
is
now properly adjusted. The receive will remain quiet until a signal is
actually received. Do not advance the control too far, or some of the
weaker signals will not be heard.
6. Set
CHANNEL
selector switch to the desired channel.
7. Set the
RF
gain control fully clockwise for maximum
RF
gain.
8. Adjust
CLARIFIER
control to clarify the SSB signals or to optimize
AM/FM signals.
OPERATING 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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Summary of Contents for DX-77HML
Page 10: ...MEMO MEMO 18 17...
