User's Manual

Operation DMH Series VHF Radio
Page 3-20 BK RADIO
This timer is also used to allow for Talkback Scan, Mixed Mode Talkback, and Unit-
To-Unit Callback.
3.15.2 HI/LO POWER
Each channel in the radio can be individually programmed to always transmit in low-
power mode, regardless of the position of the radio's LPW button (or microphone
keypad [FCN] menu setting). If the programming for the channel allows high-power
transmissions, the power level can be selected with the LPW button or the keypad
[FCN] menu.
3.15.3 DTMF ENCODING (Analog Mode Only)
Radios with keypad-equipped microphones can be programmed to enable DTMF
(Dual Tone Multiple Frequency) encoding. To send DTMF tones (similar to the tones
used by a standard push-button telephone):
1. Press and hold the PTT switch.
2. Press any of the keys on the microphone’s keypad.
You will hear a sidetone.
The FCN, PRI, ENT, and CLR keys respond as DTMF tones A, B, C, and D,
respectively.
3.15.4 ANI ENCODING (Analog Mode Only)
ANI encoding (Automatic Number Identification), if enabled, transmits a sequence of
DTMF tones each time you press the PTT switch. You will hear a sidetone. Your
dealer can program the ANI number to be sent.
If DTMF and ANI are both enabled, the ANI tone sequence is transmitted only after
the microphone’s [ENT] key is pressed while the PTT switch is activated. You will
hear a sidetone.
3.15.5 TIME-OUT TIMER
The transmit Time-Out Timer limits the duration of calls and guards against
accidentally locking on the transmitter and tying up the radio system. Your dealer can
program the duration of the Time-Out Timer (15-225 seconds, or disabled).
3.15.6 BUSY CHANNEL
If the radio has been programmed for Busy Channel operation, it will operate in one
of the following three Modes:
• Busy Channel Indication
• Busy Channel Lockout
• Busy Channel Lockout with Override