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English user manual - Radioddity GD-73 v1.0
Page
25
of
56
DTMF
The DTMF feature (Dual Tone Multi Frequency) enables the operation of radios
despite interference on a radio channel. You can optionally add DTMF signalling using
the CPS.
Initiating a DTMF call
As usual, a call is initiated by pressing the PTT key. Now, however, a pre-determined
DTMF tone sequence is first sent to other radios before it outputs the received signal
on the speaker of the device. Any transmissions without a matching DTMF sequence
will be ignored, which can be useful to overcome interference on an analogue
channel.
Security
It is possible to activate and deactivate individual radios. This makes it possible, for
example, to lock a stolen radio from further use and unlock it when you get it back.
This feature needs to be pre-programmed in the radio by CPS software.
Disable a radio
All radios in your fleet must be pre-configured for this feature using the CPS. Then you
can use a programmed function key to send out a signal to disable the other radio.
Activate a radio
All radios in your fleet must be pre-configured for this feature using the CPS. Then you
can use a programmed function key to send out a signal to re-enable the other radio.
Scan Lists
A scan list can contain various channels as well as talk groups. Your radio can support
up to 16 scan lists and up to 30 members per list. Each scan list supports a mix of
analogue and digital channels. You can add / delete channels or prioritize channels by
editing the scan list. Create a scan list with the CPS and assign it to a single channel /
talk group.
Scan types
When the scan starts, your radio will check for any voice activity by flipping through the
pre-programmed scan list. There are two methods of commencing a scan:
Manual Scan
Start or stop a scan by pressing a key that has been pre-programmed with the
CPS with the function “scan on/off”
Automatic Scan
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