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FCC ID: K6620285X20
IC ID: 511B-20285X20
VX-3R Operating Manual
characters) via Set Mode Item 57: OPN.MSG; see page ?? for details.
Adjusting the Volume Level
Pull the DIAL knob to unlock the mechanical dial lock, then rotate the DIAL knob while pressing and holding
the [VOL] key to set the desired audio level. Clockwise rotation increases the volume level.
R.F. Says: 1) You may set the audio level by the Speaker Output Level and the Earphone Output Level
individually. The “SP” notation (which means Speaker) appears in the Memory Channel Number display slot
while adjusting the Speaker Output Level. The “HP” notation (which means Headphone) appears in the
Memory Channel Number display slot while adjusting the Earphone Output Level.
2) When press the [F/W] key followed by the [VOL] key, the DIAL knob function change to the Volume Level
selection instead of the frequency control. In this case, the “VOL” notation on the display is blinked. Press
the [F/W] key followed by the [VOL] key again, the DIAL knob function returns to the frequency control.
Squelch Adjustment
The VX-3R’s Squelch system allows you to mute the background noise when no signal is being received.
Not only does the Squelch system make “standby” operation more pleasant, it also significantly reduces
battery current consumption.
The Squelch system may be adjusted independently for the FM and Wide-FM (FM Broadcast) modes.
1. Press the [F/W] key, then press the [MONI] switch on the left side of the radio. This provides a
“Short-cut” to Set Mode Item 78: SQ LVL.
2. Now, rotate the DIAL knob to set the Squelch so that the background noise is just silenced (typically at
a setting of about “1” or “2” for AM/FM, and “2” or “3” for Wide-FM/FM Broadcast/AM Broadcast); this is
point of maximum sensitivity to weak signals.
Note: Do not forget to pull the DIAL knob to rotate the DIAL knob.
3. When you are satisfied with the Squelch threshold setting, press the PTT switch momentarily to save
the new setting and exit to normal operation.
R.F. Says: 1) The VX-3R can set the squelch threshold level on the AM mode, FM mode, Wide FM mode,
and AM Broadcast individually.
2) A special “S-meter Squelch” feature is provided on the VX-3R. This feature allows you to set the squelch
so that only signals exceeding a certain S-meter level will open the squelch. See page ?? for details.
3) If you’re operating in an area of high RF pollution, you may need to consider “Tone Squelch” operation
using the built-in CTCSS Decoder. This feature will keep your radio quiet until a call is received from a
station sending a carrier which contains a matching (subaudible) CTCSS tone. Or, if your friends have
radios equipped with DCS (Digital Coded Squelch) like your VX-3R has, try using that mode for silent
monitoring of busy channels.
Vertex Standard Co., Ltd.
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