service@unclebills.com.au
MODEL: ET0195 PRODUCT CODE: 55913 12/2016
23
AFTER SALES SUPPORT
1300 777 137
Advanced Operations (cont.)
Note: If you make no entry in the menu for about 6 seconds, the menu will close.
talk on a private sub-channel inside an active channel and is used to reduce the annoyance of listening to
other users on a shared channel. Each channel has 38 CTCSS codes and 61 DCS codes.
CTCSS
The Continuous Tone Coded Squelch System (CTCSS) is a Squelch quieting system that allows groups of
users to share the same channel without disturbing each other. It uses 1 of 38 low frequency tones to open
and close the Squelch on the radio. The CTCSS codes are not encrypted and do not prevent others from
hearing your transmission if they are on the same channel and sub-channel. They simply provide you with
a quieter channel by preventing you from hearing transmissions that are not using the same code as you
and are therefore not directed at you. Please refer below for the CTCSS Frequency Table and see page 25
for DCS Frequency Table..
CTCSS Frequency Table
CTCSS
FREQ. No.
CTCSS FREQ.
(Hz)
CTCSS
FREQ. No.
CTCSS FREQ.
(Hz)
CTCSS
FREQ. No.
CTCSS FREQ.
(Hz)
CTCSS FREQ.
No.
CTCSS FREQ.
(Hz)
1 67.000 11 97.400 21 136.500 31 192.800
2 71.900 12 100.000 22 141.300 32 203.500
3 74.400 13 103.500 23 146.200 33 210.700
4 77.000 14 107.200 24 151.400 34 218.100
5 79.700 15 110.900 25 156.700 35 225.700
6 82.500 16 114.800 26 162.200 36 233.600
7 85.400 17 118.800 27 167.900 37 241.800
8 88.500 18 123.000 28 173.800 38 250.300
9 91.500 19 127.300 29 179.900
10 94.800 20 131.800 30 186.200
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