Icom IC-H12, Руководство по обслуживанию

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A N TE NNA CO N N E CTOR
Connect the su ppl ied flex i ble anten na. An external anten n a can be used, u si n g a BNC conn ector.
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T R ANSMI T/BATT E R Y IN D I CATOR
I l lu m i nates in the transmit mode. Also in dicates the battery condit ion; du ring transmission. The
voltage of N i ckel-Cadmium batteri es drops rapidl y just before they are exhausted, so when this
in dicator goes out, be sure to i m m ediatel y stop u sing it, and charge the batteries again.
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CHA N N EL SELECT SWITCH
Selects on e of the programmed chan nels.
(1)
SQUELCH CO N T R OL
Sets the squ elch threshold level. To turn O F F the squ elch fu n ction , rotate this control completely
counterclockwise. To set the threshol d l evel higher, rotate the control cl ockwise.
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VOLUME CONT ROL
and
POW E R SW I TCH
When the control is turn ed completely countercl ockwise, the power is OFF. By turning the control
cl ockwise beyond the "cl ick'', the unit is tu rned ON and the audio level increases by further rotat­
ing it clockwise.
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EXT E R NAL SPEAKER JACK
When an external speaker (or an earphone) is used, con nect it to this jack. Use a speaker with an
i mpedance of
8
ohms. When the extern al speaker is conn ected the bu ilt -in speaker does not
fun ction.
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EXTE R NAL MI C JACK
When an externa l microphone is u sed, connect it to this jack. See the schematic for the proper
hookup. When the external mi crophone is connected the bu ilt-in m icrophone does not fu nction .
The IC-CM9 optional speaker-m icrophone can also be used.
r
Eloct'ot oondoMoc m;ornphon o
Microphone
R
R =20-30Kn
Dynamic mi crophone
Microphone
PTT SWITCH
PTT SWITCH
:8
..
PUSH TO TALK ( PTT) SW I TCH
F or tra nsm ission, press this switch and talk into the microphon e with normal voice. The intern a l
mi crophone i s o f the el ectret-con denser type and provi des good pickup for all voice l evels .
9 CHA R GE R CO N N E CTOR
Connects to the output plu g of the wal I charger CM-25U/E or other 1 2V DC power sou rce.
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BATTE R Y CHA R GE I N D I CATOR
Lights during battery charging.
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