Bedienungsanleitung Yaesu FT-1900R (Seite 27 von 90) (Englisch)

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23FT-1900R OPERATING MANUAL

CTCSS/DCS/EPCS OPERATION

CTCSS OPERATION

Many repeater systems require that a very-low-frequency audio tone be superimposed on your

FM carrier in order to activate the repeater. This helps prevent false activation of the repeater by

radar or spurious signals from other transmitters. This tone system, called “CTCSS” (Continuous

Tone Coded Squelch System), is included in your FT-1900R, and is very easy to activate.

CTCSS setup involves two actions: setting the Tone Mode and then setting of the

Tone Frequency. These actions are set up by using the Set (Menu) mode, selec-

tions #49 (SQL.TYP) and #52 (TN FRQ).

1. Press and hold in the

[

MHz

(

SET

)]

key for one second, then

rotate the DIAL knob to select “49 SQL.TYP.”

2. Press the

[

MHz

(

SET

)]

key, then rotate the DIAL knob so that “TONE” appears on the

display; this activates the CTCSS Encoder, which allows

repeater access.

3. Rotating the DIAL knob one more click clockwise in the above step will cause “TSQL”

to appear. When “TSQL” appears, this means that the Tone Squelch system is active,

which mutes your FT-1900R’s receiver until it receives a call from another radio send-

ing out a matching CTCSS tone. This can help keep your radio quiet until a specific call

is received, which may be helpful while operating in congested areas.

)

You may notice a “RV TN” indication on the display while you rotate the

DIAL knob in this step; this means that the Reverse Tone Squelch system is

active, which mutes your FT-1900R’s receiver (instead of opening the squelch) when

it receives a call from the radio sending a matched CTCSS tone. The “T SQ” icon will

blink on the display when the Reverse Tone Squelch system is activated.

)

You may notice a “DCS” indication on the display while you rotate the DIAL knob

still more. We’ll discuss the Digital Code Squelch system shortly.

4. When you have made your selection of the CTCSS tone mode, press the

[

MHz

(

SET

)]

key momentarily, then rotate the DIAL knob three clicks clockwise to select Menu “52

TN FRQ.” This Menu selection allows setting of the CTCSS

tone frequency to be used.

5. Press the

[

MHz

(

SET

)]

key to enable adjust-

ment of the CTCSS frequency.

6. Rotate the

DIAL knob

until the display indicates the Tone Fre-

quency you need to be using.

7. When you have made your selection, press

and hold in the

[

MHz

(

SET

)]

key for one

second to save the new setting and exit to

normal operation.

CTCSS TONE FREQUENCY

(

)

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 ––––

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