VX-2R O
PERATING
M
ANUAL
21
A
DVANCED
O
PERATION
CTCSS O
PERATION
Many repeater systems require that a very-low-frequency audio tone be superimposed on
your FM carrier in order to activate the repeater. This helps prevent false activation of the
repeater by radar or spurious signals from other transmitters. This tone system, called
“CTCSS” (Continuous Tone Coded Squelch System), is included in your
VX-2R
, and is
very easy to activate.
CTCSS setup involves two actions: setting the Tone Frequency and then setting of the
Tone Mode. These actions are set up by using the [MD] key or Set Mode Items 42:
SQLTYP and 44: TN FRQ.
1.
Press the [
F/W
] key, then press the [
MD
] key. This provides a “Short-cut” to Set Mode
Item 42:
SQLTYP
.
2.
Rotate the
DIAL
knob so that “
TONE
” appears on the display;
this activates the CTCSS Encoder, which allows repeater ac-
cess.
3.
Rotation of the
DIAL
knob one more “click” in step “2” above will cause the “
T SQL
”
notation to appear. When “
T SQL
” is displayed, this means that the Tone SQueLch
system is active, which mutes your
VX-2R
’s receiver until it receives a call from an-
other 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.
1) You may notice an additional “DCS” icon appearing while you rotate
the DIAL knob in this step. We’ll discuss the Digital Code Squelch system
shortly.
2) You may notice “RV TN” indication on the display, this means that the Reverse
Tone Squelch system is active, which mutes your VX-2R’s receiver 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.
4.
When you have made your selection of the CTCSS tone mode, press the
PTT
key to
save the new setting.
5.
Press and hold in the [
H/L
] key for one second to enter the Set mode.
6.
Rotate the
DIAL
knob to select Set Mode Item 44:
TN FRQ
.
7.
Press the [
H/L
] key momentarily to en-
able adjustment of the CTCSS frequency.
8.
Rotate the
DIAL
knob until the dis-
play indicates the
Tone Frequency
you need to be using (ask the repeater
owner/operator if you don’t know the tone
frequency).
CTCSS TONE FREQUENCY
(
Hz
)
67.0
69.3
71.9
74.4
77.0
79.7
82.5
85.4
88.5
91.5
94.8
97.4
100.0
103.5
107.2
110.9
114.8
118.8
123.0
127.3
131.8
136.5
141.3
146.2
151.4
156.7
159.8
162.2
165.5
167.9
171.3
173.8
177.3
179.9
183.5
186.2
189.9
192.8
196.6
199.5
203.5
206.5
210.7
218.1
225.7
229.1
233.6
241.8
250.3
254.1
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