Yaesu VX-3R, Руководство по эксплуатации, Страница: 30 / 132

VX-3R O
PERATING
M
ANUAL
28
CTCSS O
PERATION
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 TYP SQ TYP
SQ TYP SQ TYP
SQ TYP
.
2. Rotate the DIAL knob so that “
TONE TONE
TONE TONE
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 “
TSQL TSQL
TSQL TSQL TSQL
”
notation to appear. When “
TSQL TSQL TSQL TSQL 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 O
PERATION
ˆ You may notice an additional “
DCS DCS DCS DCS DCS
” icon appearing while you rotate the DIAL
knob in step 3 above. We’ll discuss the Digital Code Squelch system shortly.
ˆ You may notice “
RV TN RV TN RV TN RV 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.
ˆ You may notice “
PR FRQ PR FRQ
PR FRQ PR 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 FRQ PR FRQ
PR FRQ PR FRQ PR FRQ
) is received. The “ ” icon will appear on the
display when the User programmed Reverse CTCSS Decoder is activated.
ˆ You may notice “
PAGER PAGER PAGER PAGER PAGER
” and “
MESSAGE MESSAGE MESSAGE MESSAGE 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.