DUAL TONE SQUELCH SYSTEM (DTSS)

1

DTSS provides a more refined method than CTCSS to

2selectively communicate with specific stations. The squelch

3on the transceiver opens only when the same 3-digit DTMF (Dual Tone Multi-Frequency) code is received that is

4programmed in this transceiver. You can select a 3-digit

5code from among 1000 combinations, 000 to 999.

6Note:

◆Be aware that audible DTMF tones from other transceivers near you

7may be picked up by your MC-53DM or MC-45 microphone. If so,

this could prevent the functions described in this chapter from working

8correctly.

◆DTSS does not function while you are storing DTSS codes even if a

9code is received that matches one already stored in memory.

10

3Press [F] (1 s), [C.SEL].

•The current DTSS code appears with the first digit blinking. The default is 000.

4 Use the Tuning control or Mic [UP]/[DWN] to select the

first digit.

• When using the MC-53DM microphone, you can select

three digits by simply pressing numeric keys in sequence.

11

STORING DTSS CODES

5 Press [s].

12

13

1 Select the desired band.

2 Press [F], [DTSS] to switch the DTSS function ON.

• "DT" appears.

• The second digit blinks.

6 Repeat Steps 4 and 5 to select the second and third

digits.

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7 To switch the DTSS function OFF, repeat pressing [F],

[DTSS] twice.

Note: The selected DTSS code also can be stored in a memory channel or the Call channel.

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