FCC ID: K6620223X20
IC ID: 511B-20223X20
VX-120/170 O
PERATING MANUAL
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Vertex Standard Co., Ltd.
(3) VOL/PWR Knob
Turn this control clockwise to turn the radio on and to increase the volume.
Counter-clockwise rotation into the click-stop will turn the radio off.
(4) DIAL Knob
This (inner) 20-position detented rotary switch is used for setting the operating frequency,
and also is used for menu selections and other adjustments.
(5) Speaker
The internal speaker is located here.
(6) LCD (Liquid Crystal Display)
The display shows the current operating condition, as described on the next page.
(7) Keypad
These 16 keys select many of most important operating features on the VX-120/170. The
functions of the keys are described in detail on the pages to follow.
(8) TX/BUSY Indicator Lamp
This indicator glows green when the squelch opens, and turns red during transmit.
(9) MIC
The internal microphone is located here.
Side Panel
(1) PTT (Push To Talk) Switch
Press this switch to transmit, and release it (to receive) after your transmission is completed.
(2) MONI Switch
Pressing this switch disables the noise squelching action, allowing you to hear very weak
signals near the background noise level temporarily.
Press the [F/W] key on the keypad first, then press this switch to enable to adjustment of the
squelch threshold level.
(3) EXT DC Jack
This coaxial DC jack allows connection to an external DC power source (6-16V DC). The
center pin of this jack is the Positive (+) connection.
Do not allow the VX-120/170 to become submerged in water while the rubber cap over the
EXT DC jack is removed.
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