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11 OTHER FUNCTIONS
DD
Display dimmer
Adjust to suit lighting conditions.
The levels 1 (dark) to 8 (bright: default) are available.
DD
Display color
The display color can be set to amber (default), yellow or
green.
DD
Mic lock function
Sets the supplied HM-133’s (optional for some versions) key
lock function from ON and OFF (default).
DD
Repeater tone
Sets subaudible tone frequency (encoder only) for repeater
operation. Total of 50 tone frequencies (67.0–254.1 Hz) are
available. (default: 88.5 Hz)
DD
Tone squelch tone
Sets subaudible tone frequency (both encoder and decoder)
for tone squelch operation. Total of 50 tone frequencies
(67.0–254.1 Hz) are available. (default: 88.5 Hz)
• Available subaudible tone frequencies
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
• Yellow setting • Green setting