Intek MX-825V Instruction Manual page 17

DTMF (Dual Tones Multi-Frequency)
Press DTMF Key (7) to enterDTMF mode and use the Rotary Switch to select the desired DTMF code
(32 groups maximum).
Press PTT Key (16) to transmit the selected Tone directly. To EXIT the DTMF Mode, press EXIT Key (6).
SQUELCH SETTING
This function allows to silent the receiver by cutting the background noise, when no signals are
received.
Squelch Level Selection
The Squelch threshold level is adjustable in 10 levels, from 0 to 9. Enter the MENU Mode and select
the SQH.LEV function setup. Press MENU Key (4) to confirm and use the Rotary Switch to select the
desired Squelch Threshold level, from SQL-0 (Squelch open) to SQL-9 (lowest Squelch sensitivity).
Press MENU Key (4) to confirm the selection and press the EXIT Key (6) to return to Stand-By Mode or
use Rotary Switch (4) to select other functions.
Squelch Mode Selection
Enter the MENU Mode and select the SQH.MOD function setup. Press MENU Key (4) to confirm and
use the Rotary Switch to select the desired option. The available Squelch modes are : CARRIER,
CT.DCS, OPT.SIG, AND, OR.
1. CARRIER (Carrier Wave) : When radio receives an incoming signal which reach the squelch
level, the Squelch will open.
2. CT.DCS (CTCSS / DCS) : This mode is available only when the selected channel has a CTCSS
or DCS tone associated. Only the CTCSS / DCS succeed in decoding, radio can open squelch.
3. OPT.SIG (2-Tone / 5-Tone / DTMF) : This mode is available only when the selected channel is in
2-Tone, 5-Tone or DTMF mode. Only the 2/5-Tone / DTMF succeed in decoding, the transceiver
can open squelch.
4. AND (2-Tone / 5-Tone / DTMF and CTCSS / DCS) : This mode is available only when the
selected channel is in 2-Tone, 5-Tone or DTMF mode and CTCSS/DCS mode.
Only the 2-Tone/5-Tone / DTMF and CTCSS / DCS succeed in decoding, radio can open squelch.
5. OR (2-Tone / 5-Tone / DTMF or CTCSS / DCS) : This mode is available only when the selected
channel is in 2-Tone, 5-Tone or DTMF mode or CTCSS/DCS mode. Only the 2/5-Tone / DTMF or
CTCSS / DCS succeed in decoding, the transceiver can open squelch.
Press MENU Key (4) to confirm the selection and press the EXIT Key (6) to return to Stand-By Mode or
use Rotary Switch (4) to select other functions.
Auto Resume Time
Set radio in 2/5-Tone or DTMF Mode and set the Squelch Mode to include 2/5-Tone / DTMF (refer to
Squelch Mode Selection). When the signal on selected channel disappear, radio will enter automatically
the receiving mode again within Auto Resume Time.
Encoding Squelch
If the transceiver doesn' t receive the correct and suited encoding mode (2/5-Tone / DTMF), user can' t
reply the call.
1. RECEIVING
When radio receives a signal which has same 2-Tone / 5-Tone / DTMF codes as selected channel,
Squelch will be open in order to receive the communication.
Advanced Functions
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