Topcom Protalker PT-1078 User Manual page 5

Protalker PT-1078
DCS is similar to CTCSS, but instead of sending a continuous tone of a selected frequency, a digital data transmission is added to the
radio signal. This Digital Code is transmitted at a really low rate, around 134 bits per second (the code is 23 bits long). Only the PMR's
of the latest generation will support DCS. There are 83 available DCS codes that can be used. Since earlier models will only support
CTCSS it will be better to use DCS to prevent that other users will be audible during your PMR conversations.
13.7.1 Changing sub-channels
• Press the SUB - key
sub-channel) will blink.
• Use the
channel:
1..38: CTCSS code (1...38)
39..121: DCS code
• Press the OK - key
Annex B will show all detailed information about the CTCSS and DCS sub-channel codes.
13.8 Making a call
When you press the
channel/sub-channel.
This will indicate that you want to start a conversation.
• Press the
There are 10 different call tones. You can select a call tone in the menu:
• Press the
• Press the OK - key
• Use the
• Press the OK - key
13.9 Monitor
You can use the monitor function to check for weaker signals in the current channel.
• Press the MON - key to start monitoring.
14
• If you hold this key for more than 3 seconds, the radio will go into continous monitoring mode.
• Press the key again to disable the monitor function.
13.10 Channel Scan
Channel scan performs a search for active signals in an endless loop from channel 1 to 8.
Once an active channel is found, the scanning will stop so you can listen to the conversation.
If there is no more activity on the found channel, the scanning will resume after two seconds.
If you press the PTT- key on the found channel, the scan function will end and the radio will remain on this channel.
15
• Press the
• Press the OK - key
• Press the PTT - key
13.11 Silent mode
In silent mode no audio can be heard when receiving a signal.
When receiving a signal (or a call) in silent mode the following will happen:
– The display backlight, SLNT and channel number will flash during 15 seconds
– The " Missed Call" 17 icon will blink on the display
– The vibrator will vibrate during 3 seconds
– In the next 3 minutes, the vibrator will vibrate again every minute.
11 the current selected sub-channel (or OFF in case of no
12
13
- key or the - key to select the desired sub-
(1...83)
6
to confirm
- key 10 you will transmit a call tone to the other users on the same
10
- key
7
- key three times (four times in Group mode)
6
13 12
- key or the - key to select the call tone
6
to confirm
7
- key SCAN will appear on the display
6 to start scanning
to stop scanning
15
Once a key is pressed or a transmission is made by pressing the PTT - key
silent mode will be temporary disabled so the PMR radio will be able to receive signals. If there is no action
during 15 seconds the unit will go back into silent mode.
Enable / Disable silent mode: .
• Press the
• Press the OK - key
• Use the
the silent mode
13.12 Roger Beep On/Off
After the PTT - key 15 is released, the unit will send out a roger beep to confirm that you have stopped talking.
The Roger Beep can be switched On or Off:
• Press the the
appear on the display
• Press the OK - key
• Use the
the Roger Beep
• Press the OK - key
13.13 Key Tone On/Off
When a key is pressed, a tone can be heard.
The key tone can be switched On or Off:
• Press the
appear on the display
• Press the OK - key
• Use the
the key tone
• Press the OK - key
13.14 Key lock
6
Press and hold the OK - key during 3 seconds to enable/disable key lock
– LOCK will appear for 2 seconds when enabled
– UNLK will appear for 2 seconds when disabled
When key lock is enabled, the PTT-key
key and the power-key will still be operational. All other keys are locked.
In "Group Mode" (next chapter) the call key
13.15 Group Mode
The PT-1078 can be used in group mode. 122 different groups can be created (0..121).
You can use at maximum 16 PT-1078's in the same group.
Each PT-1078 can be programmed with an ID-code (1..16) and each user can program his name in the unit.
A user can call another user individually or call all users in the group at the same time. The called user will be able to see who initiated
the call.
When an individual user is called, a private conversation can be made without disturbing the other users of the same group.
13.15.1 Activating / Deactivating Group mode
Activate:
• Press and hold the SUB/GRP- key
GRP will appear on the display
Deactivate:
• Press and hold the SUB/GRP- key
GRP will disappear from the display
15
or the the
7
- key twice SLNT will appear on the display
6
- key 13 or the - key 12 to enable (ON) or disable (OF)
- key five times (six times in Group Mode)
7
6
13 12
- key or the - key to enable (ON) or disable (OF)
6
to confirm
- key 7 six times (seven times in Group Mode) TONE will
6
12
- key 13 for the - key to enable (ON) or disable (OF)
6
to confirm
15
, the volume control-keys, the monitor-key (MON), the call-
will also be locked when key lock is enabled.
11
for two seconds
11
for two seconds
5
key 10 , the
RGR will