4
Advanced Operation
Selecting the Squelch Type in the Analog FM Mode
1. Press and hold the [
MHz
(
SETUP
)] key to enter the Set mode.
2. Rotate the
DIAL
knob to select “
SQL TYPE 44
”.
3. Press the [
MHz
(
SETUP
)] key, then rotate the
DIAL
knob to select the squelch type.
Tone squelch (CTCSS), DCS and the New PAGER (EPCS) functions do not operate in the
C4FM digital mode. Press the [
MODE
(
DG-ID
)] key to switch the communication mode to AMS
(Auto Mode Select function) or analog (FM) mode.
Squelch type Icon indication
Description
OFF
-
Deactivates the tone squelch function and DCS function OFF,
then returns to the normal squelch operation in the An-alog
FM mode.
TONE
T
(appears)
Analog FM Transmissions contain the CTCSS tone. Receives
as a normal squelch operation.
TSQL
T SQ
(appears)
Activates the CTCSS tone squelch function on Analog FM re-
ceive.
DCS
DCS
(appears)
Activates the Digital Code Squelch (DCS) function. The DCS
code may be selected from 104 codes (from 023 to 754).
RV TONE
T SQ
(blinks)
Activates the reverse tone function. Used to monitor commu-
nications based on the squelch control system. When a signal
contains the designated tone, the squelch is not opened, and
when the tone signal disappears, the squelch opens and com-
munication starts.
PAGER
P
(appears)
Activates a new two-tone CTCSS pager function. When com-
municating with FTM-7250DR/DE transceivers among friends,
specify personal codes (each code is composed of two tones)
so that you can call only specific stations.
D CODE*
DCS
(blinks)
Transmits the signal containing the DCS CODE. Receives as
a normal squelch operation.
T DCS*
T
DCS
(blinks)
(appears)
Sends a tone signal when transmitting, and receives the only
signal matches the DCS code when receiving.
D TONE*
T SQ
DCS
(appears)
(blinks)
Sends the DCS CODE when transmitting, and receives only
signals that contain a matching tone signal when receiving.
*: Turning the Set Mode “
SQL EXP 43
” to ON, “D CODE”, “T DCS” and “D TONE”
setting values are activated.
4. Press and hold the [
MHz
(
SETUP
)] key to save the new setting and exit to normal
operation.
z
The squelch type may be set for each frequency band (BAND).
z
The CTCSS and DCS squelch settings are also active during scanning. If scanning is
performed with the CTCSS and DCS squelch function activated, scanning stops only
when a signal containing the specified CTCSS tone or DCS code is received.
z
Pressing the programmable key on the MH-48A6JA Microphone that is assigned “SQL
OFF” allows signals that do not contain a tone or DCS code, and signals with different
tones, DCS codes, digital mode signals to all be heard.
z
Set Mode “
DCS INV 11
” (see page 29) allows to receive the DCS code of the inverted phase.
