Kenwood TH-55AT Series Manuel d'utilisateur télécharger pdf (Page 17)

Tone Frequency

• Tone Activation

To activate the TONE function depress the TONE switch on

the top of the transceiver. The tone indicator will appear in

the display to signify the tone has been activated. To turn

the tone OFF press the TONE key again.

Tone frequency selection

1. Press the CTCSS key for

longer than 1 second.

The current tone fre

quency will be dis

played.

2. Rotate the Tuning con

trol until the desired

tone frequency appears

in the display.

3. Press the TONE key to

turn to the normal fre

quency display.

4. If CTCSS (Tone Sque

lch) is not desired press the CTCSS key to cancel the

function. The transmit tone will still be active.

Note:-----------------------------------------------------------------------------------------

When no Tone Unit is installed, pressing the TONE key will not

transmit a subtone, even if the indicator is ON.

In Europe a 1750 Hz tone is used in transmit. Press and

hold the TONE key to transmit the access tone, then press

the PTT switch.

In the United Kingdom a 1750 Hz tone burst at the beginn

ing of each transmission is used. Press the Tone key.

Since use of this tone is required in the Europe and the

United Kingdorn, an 1750 Hz tone encoder is encluded as

standard equipment.

67.0 Hz 110.9 Hz 173.8 Hz

71.9 Hz 114.8 Hz 179.9 Hz

74.4 Hz

118.8 Hz

186.2 Hz

77.0 Hz 123.0 Hz 192.8 Hz

79.7 Hz 127.3 Hz

203.5 Hz

82.5 Hz 131.8 Hz

210.7 Hz

85.4 Hz

136.5 Hz 218.1 Hz

88.5 Hz 141.3 Hz

225.7 Hz

91.5 Hz 146.2 Hz 233.6 Hz

94.8 Hz

151.4 Hz

241.8 Hz

100.0 Hz 156.7 Hz

250.3 Hz

103.5 Hz 162.2 Hz

107.2 Hz 167.9 Hz

• CTCSS (Tone Squelch) Operation

1. To actuate the CTCSS (tone squelch) function (decode)

select the desired tone frequency as described above

but do not press the CTCSS key the second time.

2. Squelch will now open only when the transceiver

receives the same subtone frequency.

3. To release tone squelch operation press the CTCSS key.

The CTCSS indicator should go out.

It is a good operating practice to check the frequency

before transmitting. A MONITOR switch has been provided

for this purpose when using the CTCSS (tone squelch)

function. Pressing this switch will open the squelch so you

can check for activity.

• TSU-6 (option) installation

1. Remove the backing from f

the cushion (large) that

was provided the TSU-6

and attach it to the back

of the TSU-6.

2. Remove the Battery Pack

and remove the four

Phillips head screws from

the terminal plate of the

transceiver.

3. Turn the terminal plate

over and take out the

cable as shown in the

diagram.

4. Remove the clear tube

covering the connector,

and the resistor inserted

into the connector.

5. Attach the cable from TSU-6 as shown in the diagram.

6. Remove the backing from the other side of the cushion

and attach the TSU-6 to the transceiver.

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Kenwood TH-55AT Series Manuel d'utilisateur Page 17

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