To send the call alarm melody
Press the PTT switch twice quickly. The LED indicator will light
red for a few seconds as the melody is sent. The melody will be
heard in the speaker of the receiving radio.
CTCSS TONE FREQUENCIES
CTCSS
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TX670
Freq. Hz
67.0
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
Instruction Manual
CTCSS
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Freq. Hz
131.8
136.5
141.3
146.2
151.4
156.7
162.2
167.9
173.8
179.9
186.2
192.8
203.5
210.7
218.1
225.7
233.6
241.8
250.3
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