8
FT-70DR/DE Advance Manual
Tone squelch feature
The tone squelch opens the speaker audio only when a signal containing the specified
CTCSS tone is received. The receiver will be quiet while waiting for a call from a specific
station.
The tone squelch function does not function in digital mode. Press the [
MODE
] to change the
communication mode to Analog FM mode or press and hold the [
AMS
] key to turn the AMS
function ON (the AMS icon appears).
Setting CTCSS Tone frequency
The tone frequency may be selected from 50 frequencies (from 67.0 Hz to 254.1 Hz).
1. Press the [
F
] key, then press the [
5
](SQ TYP) key.
2. Rotate the
DIAL
knob to select the “TSQL”.
3. Press the
PTT
switch to save the setting and return to
normal operation.
4. Press the [
F
] key, then press the [
6
](CODE) key.
The setting screen of the tone frequency is displayed.
5. Rotate the
DIAL
knob to select the tone frequency.
6. Press the
PTT
switch to save the setting and return to
normal operation.
z
The tone frequency setting is common with the squelch types as follows:
TONE, TSQL, RV TN, T DCS, D TONE
z
The default setting is “88.5 Hz”
Searching for the CTCSS Tone transmitted by the other Station
Search and display the tone squelch CTCSS tone transmitted by the other station.
1. Press the [
F
] key, then press the [
5
](SQ TYP) key.
2. Rotate the
DIAL
knob to select the “TSQL”.
3. Press the
PTT
switch to save the setting and return to normal operation.
4. Press the [
F
] key, then press the [
6
](CODE) key.
The setting screen of the tone frequency is displayed.
5. Press the [
BAND
] key.
The transceiver begins searching for a matching tone frequency.
When a corresponding tone frequency is detected, a beep sound is emitted, and the
detected tone frequency blinks.
The searching stops for 5 seconds and the audio is heard.
6. Press the [
BAND
] key to stop searching.
7. Press and hold the [
F
] key.
The detected tone frequency is set.
To set the transceiver operation when scanning stops, set the Set Mode [52 SCN.RSM](
40). This setting is common with the scan setting, tone search function and DCS search
function.
