Vertex Standard VX-8R ユーザーズマニュアル
VX-8R O
PERATING
M
ANUAL
34
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-8R, and is
very easy to activate.
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-8R, and is
very easy to activate.
CTCSS setup involves two actions: setting the Tone Frequency and then set-
ting the Tone Mode. These functions are set up using Set Mode Items 94:
SQL TYP and 98: TONE FREQUENCY.
ting the Tone Mode. These functions are set up using Set Mode Items 94:
SQL TYP and 98: TONE FREQUENCY.
1. Press the
key, then press the
key. This provides a “Short-cut” to Set Mode
Item 95: SQL TYPE
95: SQL TYPE
95: SQL TYPE
95: SQL TYPE
95: SQL TYPE
.
2. Rotate the DIAL knob so that “TONE
TONE
TONE
TONE
TONE
” appears on the dis-
play. This activates the CTCSS Encoder.
3. Rotation of the DIAL knob one more “click” in step “2”
above will also activate the “TSQL
TSQL
TSQL
TSQL
TSQL
” decode function. When “TSQL
TSQL
TSQL
TSQL
TSQL
” is displayed, the
Tone Squelch system is active, which mutes your VX-8R’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 with a matching CTCSS tone.
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 with a matching CTCSS tone.
CTCSS/DCS/EPCS O
PERATION
You may notice an additional “DCS
DCS
DCS
DCS
DCS
” indication appearing while you rotate
the DIAL knob in step 3 above. We’ll discuss the Digital Code Squelch sys-
tem shortly.
tem shortly.
You may notice “REV TONE
REV TONE
REV TONE
REV TONE
REV TONE
” indication on the display while you rotate the
DIAL knob in step 3 above. When the Reverse Tone Squelch system is ac-
tive, the VX-8R’s receiver is muted when it receives a call from a radio send-
ing a matching CTCSS tone. The “RTN
tive, the VX-8R’s receiver is muted when it receives a call from a radio send-
ing a matching CTCSS tone. The “RTN
RTN
RTN
RTN
RTN
” icon will appear on the display
when the Reverse Tone Squelch system is activated.
You may notice “PR FREQ
PR FREQ
PR FREQ
PR FREQ
PR FREQ
” indication on the display while you rotate the
DIAL knob in step 3 above, this means the user programmed Reverse CTCSS
Decoder will mute your VX-8R’s receiver when it receives a call from a
radio sending a CTCSS tone matching your programmed tone (determine by
Set Mode Item 70: PR FREQUENCY
Decoder will mute your VX-8R’s receiver when it receives a call from a
radio sending a CTCSS tone matching your programmed tone (determine by
Set Mode Item 70: PR FREQUENCY
70: PR FREQUENCY
70: PR FREQUENCY
70: PR FREQUENCY
70: PR FREQUENCY
). The “PR
PR
PR
PR
PR
” icon will appear on the
display when the Reverse CTCSS Decoder is activated.
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
discuss these functions later.
Paging & Code Squelch” and the “Message Feature” are activated. We’ll
discuss these functions later.