Radio Shack 21-1706 - Manual (Page 5)

5
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You can connect an optional microphone or earphone with a
3 / 32 -inch (2.5mm) mini plug and a 1 / 8 -inch (3.5mm) plug to
the MIC/EAR jacks on the front of the CB. To avoid
feedback, do not connect the microphone/earphone’s 3 / 32 -
inch (2.5 mm) plug to only the MIC jack in CB mode.
To connect a headset with Voice Activated operation, we
recommend you check the response sensitivity of the VOX
circuit before installation. Different Voice Activation devices
provide different performance results.
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Do not use an earphone with your transceiver when
operating a motor vehicle in or near traffic. Doing so can
create a traffic hazard and could be illegal in some areas.
If you use an earphone with your transceiver be very
careful. Do not listen to a continuous broadcast. Even
though some earphones/headphones let you hear some
outside sounds when listening at normal volume levels, they
still can present a traffic hazard.
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1. Connect the red wire (with the inline fuse holder) on the
back of the transceiver to a point in your vehicle’s fuse
block that has power only when the ignition is in the
ACC (accessory) or ON position.
2. Connect the black wire to your vehicle battery’s
negative (–) terminal or to a metal part of the vehicle’s
frame (chassis ground).
.# .# .# .#
Red
Black
.
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.
• Do not connect the black wire to
a non-metallic (plastic) part, or
to any part insulated from the
vehicle’s chassis by a non-
metallic part.
• Most 13.8-volt DC power
supplies plug into a standard
AC outlet to produce DC power.
Before connecting your CB to a
13.8-volt DC power supply,
read and follow the instructions
included with the power supply.
• To prevent damage to the CB,
be sure you connect an antenna
and the microphone before you
use your CB.
Using Vehicle Bat
tery
P
o
wer