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1.
Press the [F/W] key, then press the [1(SQ TYP)] key to enable selection of the
CTCSS/DCS/ECS mode.
2.
Rotate the DIAL knob so that "TONE" indication appears on the display; this activates
the CTCSS Encoder, for access to repeaters requiring a CTCSS tone.
3.
Rotation of the DIAL knob one more "click" in step "2" above will cause the "TSQL"
notation to appear. When "TSQL" is displayed, this means that the Tone SQueLch
system is active, which mutes your VX-120/170's receiver until it receives a call from
another radio sending out a matching CTCSS tone. This can help keep your radio quiet
until a specific call is received, which may be helpful while operating in congested areas
of the band.
R.F. Says: 1) You may notice a "REV TN" indication on the display while you rotate the
DIAL knob in this step; this means that the Reverse Tone Squelch system is active,
which mutes your VX-120/170's receiver (instead of opening the squelch) when it
receives a call from the radio sending a matched CTCSS tone. The "TSQ" icon will blink
on the display when the Reverse Tone Squelch system is activated.
2) You may notice the "DCS" and "ECS" indications on the display while you rotate the
DIAL knob still more. We'll discuss the Digital Code Squelch system (for "DCS") and
Enhanced Paging & Code Squelch (for "ECS") later.
5.
When you have made your selection of the CTCSS tone mode, press the PTT switch to
save the new setting.
6.
Press the [F/W] key, then press the [2(CODE)] key to enable adjustment of the CTCSS
frequency.
7.
Rotate the DIAL knob until the display indicates the Tone Frequency you need to be
using (ask the repeater owner/operator if you don't know the tone frequency).
8.
When you have made your selection, press the [F/W] key momentarily to save the new
settings and exit to normal operation. This is different than the usual method of restoring
normal operation, and it applies only to the configuration of the CTCSS/DCS
frequencies.
R.F. Says: Your repeater may or may not re-transmit a CTCSS tone - some systems just use
CTCSS to control access to the repeater, but don't pass it along when transmitting. If the
S-Meter deflects, but the VX-120/170 is not passing audio, repeat steps "1" through "4" above,
but rotate the DIAL so that "TSQ" disappears - this will allow you to hear all traffic on the
channel being utilized.
VX-120/170 O
17/64
FCC ID: K6620223X20
IC ID: 511B-20223X20
M
PERATING
ANUAL
Vertex Standard Co., Ltd.
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