External Speaker Jack - Icom IC-502A Instruction Manual

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. TUNING KNOB
Tunes the frequency.
. RIT
Independently swings the receiver frequency + 3KHz so that signals that are slightly off
frequency may be tuned for clarity without affecting the transmitting frequency.
. MODE SWITCH
In the CW-T position the transmitter will transmit when the CW key makes contact. In the
REC position both SSB and CW signals can be received. In the CW-T position the microphone
is deactivated in the circuit.
. NOISE BLANKER SWITCH
In the NB position, the noise blanker is put into the circuit and noise pulses will be reduced.
. VOLUME
Controls the audio output level.
. FINE TUNING |
Tunes the operating frequency (both transmitting and receiving frequency) about +2.5 KHz
finely, so that you can find an exact receiving or transmitting frequency easily.
FUNCTION SWITCH
Turns the power ON and OFF and in the light position turns ON the meter light.
EXTERNAL SPEAKER JACK
An external speaker can be connected here. The impedance of the speaker should be 8 ohms.
With the external speaker connected, the built-in speaker will be disabled.
KEY JACK
A key for CW transmission is connected here.
MICROPHONE CONNECTOR
A 600 ohm microphone is connected here.
SNAP LOCKS
Convenient snap-locks hold the sides in place. To remove them for any service or to replace
the batteries, simply pull out on the center of the snap-lock and the cover can easily be
removed. When replacing the covers be sure that you have placed the covers properly in the
grooves provided, then push down on the center of the snap-lock. Note: At the time the sides
are placed in the grooves, the snap-lock center must be pulled out.