Ctcss Operation - Yaesu VX-5R Operating Manual

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Advanced Operation
O
glows green, but the VX-5R is not passing
audio, repeat steps 1~ through (3 above,
but rotate the DIAL so that "SQL" disap-
pears - this will allow you to !rear all traf-
fic on the channel being received.
CTCSS OPERATION
Many repeater systems require that a very-low-frequency audio tone be
superimposed
your FM carrier in order to activate the repeater. This helps prevent false
activation of
repeater by radar or spurious signals from other transmitters . This
tone system, cal
"CTCSS" (Cti
T
Cdd Slh
onnuousoneoequec System), is included in your
VX-5R,
an
very easy to activate .
CTCSS setup involves two actions : setting the _Tone Frequency and then
s
ting of the Tone Mode. These actions are set up by using the
[1(TN)FR
and [2(CD)TAG] keys, or Menu Items #29 and #30.
Press the
[FIW]
key, then immediately press the
[1(TN)FRQ]
key. This provides
"htt" M
#29
(SQL TYPE sor-cu toenu"") .
Rotate the DIAL
so that "TONE"
appears on the display; this activates the CTCS
Encoder,
which allows repeater access .
You may notice an additional "DCS"icon appearing while you rot
the DIAL in this step. We'll discuss the Digital Code Squelch system sho
.01
Rotation of the DIAL
in step (2 above will occasionally cause "SQL" to appear adja
cent to the "TONE"
icon . When "TONE SOL"
appears, this means that the Tone
SQueLch system is active, which mutes your
VX-5R'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 con-
gested areas.
When you have made your
[BAND(SET)AR]
key.
Now rotate the
DIAL
one click-clockwise to select Menu #30
("TONE
SET"). This
Menu selection allows setting of the CTCSS tone frequency to be
used .
Press the [BAND(SET)AR]
key to enable adjustment of the CTCSS frequency .
Rotate the DIAL
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) .
Press the [2(CD)TAG]
key to save the new settings and exit to normal operation .
selection of the CTCSS tone mode, press the
Some repeaters 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 trans-
mitting . If the BUSY LED
67 .0
114.8
151 .4
203 .5
69 .3
91 .5
118 .8
156.7
210.7
71 .9
94.8
123.0
162.2
218.1
74 .4
97 .4
167.9
77.0
100.0
131.8
173.8
233.6
79.7
103.5
136.5
179.9
241 .8
82 .5
107.2
141 .3
-SR OPERATING MANUAL
Advanced Operation
tone access control
is Digital Code Squelch, or
DCS . it is a newer, more
ides more immunity from
false paging than
h generally prov
!stem whic
r/Decoder is built into your
VX-5R,
and operation is very
he DCS Encode
ibed for CTCSS .
Your repeater system may be
configured for
just descr
}s frequently
quite useful in Simplex
operation if your friend(s) use trans-
with this advanced
feature.
as in CTCSS
operation, DCS requires that you
set the Tone A lode to
od that you
select a tone code .
'AN] key, then immediately
press the
[1(TN)FRQ]
key. This provides a
~-
:" to Menu #29
("SQL TYPE")_
hand area of the LCD; this
DIAL
until
"DCS"
appears in the upper right-
cthe DCS Encoder/Decoder
.
and rotate the
DIAL
to select Menu #31
("DCS
s
the
[BAND(SET)AR]
key,
(BAND(SET)AR]
key to enable adjustment of
the DCS Code .
digit number). Ask the re-
.e
DIAL
to select the desired DCS
Code (a three-
de ; if you are working simplex,
just
er/operator if you don't know
DCS Co
~
DCS Code
Code to be the same as that used
by your friend(s) .
s
u have made your selection,
press the
[2(CD)TAG]
key to save the new set
exit to normal operation.
tmember that the DCS is an Encode/
Decode system, so your receiver
will
u
'atmain muted until a matching DCS
code is received on an incoming
trans-
slon. Switch the DCS off
when you're just tuning around
the band!
ER,4TING MANUAL
27