Topcom Protalker PT-1078, Manual

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Protalker PT-1078 (RC-6420)
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
13.8 Making a call
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.
• 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.
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 ” 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.
Enable / Disable silent mode: .
13.12 Roger Beep On/Off
After the PTT - key is released, the unit will send out a roger beep to confirm that you have stopped talking.
13.13 Key Tone On/Off
When a key is pressed, a tone can be heard.
13.14 Key lock
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
13.15 Group Mode
The PT-1078 (RC-6420) can be used in group mode. 122 different groups can be created (0..121).
You can use at maximum 16 PT-1078 (RC-6420)’s in the same group.
Each PT-1078 (RC-6420) 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
• Press the SUB - key the current selected sub-channel (or OFF in case of no
sub-channel) will blink.
• Use the - key or the - key to select the desired sub-
channel:
1..38: CTCSS code (1...38)
39..121: DCS code (1...83)
• Press the OK - key to confirm
When you press the - key you will transmit a call tone to the other users on the same
channel/sub-channel.
This will indicate that you want to start a conversation.
• Press the - key
There are 10 different call tones. You can select a call tone in the menu:
• Press the - key three times (four times in Group mode)
• Press the OK - key
• Use the - key or the - key to select the call tone
• Press the OK - key to confirm
• Press the - key SCAN will appear on the display
• Press the OK - key to start scanning
• Press the PTT - key to stop scanning
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Annex B will show all detailed information about the CTCSS and DCS sub-channel codes.
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• Press the - key twice SLNT will appear on the display
• Press the OK - key
• Use the - key or the - key to enable (ON) or disable (OF)
the silent mode
The Roger Beep can be switched On or Off:
• Press the the - key five times (six times in Group Mode) RGR will
appear on the display
• Press the OK - key
• Use the - key or the - key to enable (ON) or disable (OF)
the Roger Beep
• Press the OK - key to confirm
The key tone can be switched On or Off:
• Press the - key six times (seven times in Group Mode) TONE will
appear on the display
• Press the OK - key
• Use the - key for the - key to enable (ON) or disable (OF)
the key tone
• Press the OK - key to confirm
Activate:
• Press and hold the SUB/GRP - key for two seconds
GRP will appear on the display
Deactivate:
• Press and hold the SUB/GRP - key for two seconds
GRP will disappear from the display
Once a key is pressed or a transmission is made by pressing the PTT - key or the the key , the
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.
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When key lock is enabled, the PTT-key , the volume control-keys, the monitor-key (MON), the call-
key and the power-key will still be operational. All other keys are locked.
In “Group Mode” (next chapter) the call key will also be locked when key lock is enabled.
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Protalker PT - 1078.book Page 5 Friday, January 25, 2013 12:03 PM