Bedienungsanleitung Yaesu VX-3R (Seite 30 von 132) (Englisch)

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VX-3R OPERATING MANUAL28

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 VX-3R, and is

very easy to activate.

CTCSS setup involves two actions: setting the Tone Frequency and then set-

ting of the Tone Mode. These actions are set up by using the [MODE] key or

Set Mode Items 79: SQ TYP and 86: TN FRQ.

1. Press the

[

F/W

]

key, then press the

[

MODE

]

key. This provides a “Short-cut” to Set

Mode Item 79:

SQ TYPSQ TYP

SQ TYP.

2. Rotate the DIAL knob so that “

TONETONE

TONE” appears on the display.

This activates the CTCSS Encoder, which allows repeater access.

Note: Do not forget to pull the DIAL knob to rotate the DIAL

knob.

3. Rotation of the DIAL knob one more “click” in step “2” above will cause the “

TSQLTSQL

TSQL”

notation to appear. When “

TSQLTSQL

TSQL” is displayed, this means that the Tone Squelch sys-

tem is active, which mutes your VX-3R’s receiver until it receives a call from another

radio sending out a matching CTCSS tone. This can helpful in a high RF congested

location by keeping your radio quiet until a call is received from a specific station.

CTCSS/DCS/EPCS OPERATION

 You may notice an additional “

DCSDCS

DCS” icon appearing while you rotate the DIAL

knob in step 3 above. We’ll discuss the Digital Code Squelch system shortly.

 You may notice “

RV TNRV TN

RV TN” indication on the display while you rotate the DIAL

knob in step 3 above, this means that the Reverse Tone Squelch system is

active, which mutes your VX-3R’s receiver when it receives a call from the

radio sending a matched CTCSS tone. The “ ” icon will blink on the

display when the Reverse Tone Squelch system is activated.

 You may notice “

PR FRQPR FRQ

PR FRQ” indication on the display while you rotate the

DIAL knob in step 3 above, this means that User programmed Reverse CTCSS

Decoder mutes your VX-3R’s receiver when it receives a call from the radio

sending the CTCSS tone your programmed matching tone (determine from

Set Menu Item: 63:

PR FRQPR FRQ

PR FRQ) is received. The “ ” icon will appear on the

display when the User programmed Reverse CTCSS Decoder is activated.

 You may notice “

PAGERPAGER

PAGER” and “

MESSAGEMESSAGE

MESSAGE” indication on the display while

you rotate the DIAL knob in step 3 above. These appear when the “Enhanced

Paging & Code Squelch” and the “Message Feature” are activated. We’ll dis-

cuss these functions later.

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