ZA-725 User Manual
18
ZA-725 User Manual
17
PROGRAMMABLE SIDE KEYS
You can program specific functions for SK1 & SK2 keys via software. Press
the key to activate/deactivate the function. A single beep sound “di” will
indicate that the function is active and a double beep sound “di di “ will
indicate that the function is deactivated.
The functions can be programmed as follows:
Sub-tones:
The CTC/DCS DEC column shows the sub tone assigned for each frequency.
There are 50 QT (CTCSS quiet tones) and 104 DQT (digital quiet tones that
can be selected. This effectively gives the user 2002 ((8+5)x(50+104))
channels to communicate on. These tones are used to privatize
conversations and reduce interference from other users on the same
frequency. There are 38 CTCSS standard tones (1-38) plus 12 extra QT
tones and 104 digital codes. The 38 tones are common on other 446 &
464MHz radios such as the Zartek Pro8 or Pro5. If the tone is left “OFF”, the
frequency is left “open” to receive communication from any tone, but your
transmitter will not be decoded by a radio with a tone.
No.
1
2
3
4
5
6
7
8
9
10
11
12
Items
OFF
Monitor
Momentary
Scan
VOX
Show Battery
Call Ring
Emergency Alert
Channel
Announcement
PTT ID
Squelch Level
Compander
Scrambler
Remarks
No function
The radio will monitor all activity on the
frequency and accept week or coded (QT/DQT)
signals. SK1 is Factory programmed on Monitor
Momentary
Start Scan.
Voice activation is used to operate the radio in
hands-free mode or as a noise / baby monitor.
The radio will begin transmitting when a noise or
voice is heard. SK2 is Factory programmed on
VOX, sensitivity level 7 of 9 with a delay of 1.5
seconds.
Indicates the level of charge remaining in the
battery.
Sends a loud 3 second ring tone to alert other
radios. SK1 is Factory programmed on Call
Ring, Hold in to activate.
Sends a very loud continuous emergency siren
to alert other radios.
Announces the channel number.
Enables or disables the sending of a PTT ID
recognition signal which is preprogrammed
either on the beginning and end of a
transmission.
Indicates the current Squelch Level.
Enables or disables the receiver
compression/expansion technology which
reduces communication noise and amplifies
voice signals.
Enables or disables the scrambler / descrambler
technology where signals are coded for extra
privacy.
