Icom IC-H6 Service Manual page 5

(]) ANTENNA CONNECTOR
Connect the supplied flexible antenna. An external antenna can be used, using a BNC connector.
®
TRANSMIT/BATTERY INDICATOR
Illuminates in the transmit mode. Also indicates the battery condition; during transmission. The
voltage of Nickel-Cadmium batteries drops rapidly just before they are exhausted, so when this
indicator goes out, be sure to immediately stop using it, and charge the batteries again.
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CHANNEL SELECT SWITCH
Selects one of the programmed channels.
@)
SQUELCH CONTROL
Sets the squelch threshold level. To turn OFF the squelch function, rotate this control completely
counterclockwise. To set the threshold level higher, rotate the control clockwise.
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VOLUME CONTROL and POWER SWITCH
When the control is turned completely counterclockwise, the power is OFF. By turning the control
clockwise beyond the "click", the unit is turned ON and the audio level increases by further rotat-
ing it clockwise.
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EXTERNAL SPEAKER JACK
When an external speaker (or an earphone) is used, connect it to this jack. Use a speaker with an
impedance of 8 ohms. When the external speaker is connected the built-in speaker does not
function.
(J)
EXTERNAL MIC JACK
When an external microphone is used, connect it to this jack. See the schematic for the proper
hookup. When the external microphone is connected the built-in microphone does not function.
The IC-CM9 optional speaker-microphone can also be used.
Electret condenser microphone
Dynamic microphone
Microphone
Microphone
0
[_______..______!
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R
R=20-30K.11
PTT SWITCH
PTT SWITCH
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PUSH TO TALK (PTT) SWITCH
For transmission, press this switch and talk into the microphone with normal voice. The internal
microphone is of the electret-condenser type and provides good pickup for all voice levels.
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CHARGER CONNECTOR
Connects to the output plug of the wall charger CM-25U/E or other 12V DC power source.
@
BATTERY CHARGE INDICATOR
Lights during battery charging.
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