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Copyright © 2020 RCA Communications Systems
www.RCACommunicationsSystems.com
Communications Systems
RDR42x0 Professional Digital
Two-Way Radios
INSTRUCTION MANUAL
6. The display shows Turned Off if you stop the scan or the display
shows Turned On if you start the scan.
7. Press “ ” to return to the main menu.
8. The LED blinks orange and the Scan Icon is displayed when Scan is
in progress. The LED turns off and the Scan icon disappears when
Scan is stopped.
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Responding to a Scan
During scanning, your radio stops on any channel / group where
matching activity is detected. After the transmission is over the radio
remains on the active channel for a programmed time known as “Hang
Time” (the Hand Time is adjustable and must be programmed by your
RCA Communications Systems dealer).
1. Press the [PTT] button during “Hang Time” to respond to the call.
The LED lights up red.
2. Release [PTT] button to listen.
Note:
If you do not respond within the “Hang Time” period, the radio
will resume scanning.
Deleting a Nuisance Channel
If a channel continually generates unwanted calls or noise (termed
a “Nuisance” Channel), you can temporarily remove the unwanted
channel from the scan list.
Note:
This capability does not apply to the channel designated as the
Selected Channel. This feature is not accessible through the menu.
1. When your radio stops on an unwanted or nuisance channel, press
the programmed Nuisance Channel Delete programmable function
key until you hear a tone.
2. Release the programmed Nuisance Channel Delete programmable
function key. The nuisance channel is deleted.
Restoring a Nuisance Channel
To restore the deleted nuisance channel, restart the radio by powering
it off powering it back on, or restart the scanning (see Starting and
Stopping Scanning section).
Radio Settings
(RDR4250 and RDR4280 Only)
Keypad Locked and Keypad Unlocked
You can lock your radio keypad to avoid an inadvertent key entry.
1. Press “ ” to access the main menu.
2. Press “ ” or “ ” to navigate to Settings and press “ ”
to select.
3. Press “ ” or “ ” to navigate to Radio Settings and press
“ ” to select.
4. Press “ ” or “ ” to navigate to Keypad Lock and press “ ”
to select.
5. Press “ ” or “ ” to select On. The display shows “Keypad
Locked”.
To unlock the keypad, press “ ” then press [*] button. The display
shows Keypad Unlocked and returns to the Home screen.
Turning Keypad Tones On or Off
You can enable or disable keypad tones if needed.
1. Press “ ” to access the main menu.
2. Press “ ” or “ ” to navigate to Settings and press “ ”
to select.
3. Press “ ” or “ ” to navigate to Radio Settings and press
“ ” to select.
4. Press “ ” or “ ” to navigate to Tone/Alerts and press “ ”
to select.
5. Press “ ” or “ ” to navigate to Keypad Tone and press
“ ” to select.
6. Press “ ” or “ ” to Enable or Disable the keypad tone.
Scan Lists
Scan lists are created and assigned to individual channels/groups. The
radio scans for activity by cycling through the channel/group specified
in the scan list for the current channel/group. The RDR4220 radio has
32 scan lists with up to 32 members each and the RDR4250/4280
has 250 scan lists with 32 members each. Each scan list supports a
mixture of both analog and digital channels. You can add, delete, or
prioritize channels by editing the scan lists.
Viewing an Entry in the Scan List
(RDR4250 and RD4280 Only)
1. Use the Channel Selector Knob to select a channel programmed
with a scan list.
2. Press “ ” to access the menu.
3. Press “ ” or “ ” to navigate to Scan and press “ ” to select.
4. Press “ ” or “ ” to navigate to Scan Lists, press “ ” to
select.
5. Press “ ” or “ ” to select the desired Scan List and press
“ ” to select. Press “ ” or “ ” to select View/Edit and
press “ ” to view or edit the channel members.
Note:
If set as priority, the Priority icon appears left of the channel
member Number/Alias, indicating whether the member is Priority 1
or Priority 2 channel. You cannot have multiple Priority 1 or Priority 2
channels in the same scan list. There is no Priority icon if priority is set
to None.
Setting the Power Level
You can adjust your radio power setting to high or low for each channel.
Press the programmed Power Level programmable function key to
toggle the transmit power level between high and low. You may also
use the radio menu (RDR4250 and RDR4280 Only) by following the
process outlined below:
1. Press “ ” to access the main menu.
2. Press “ ” or “ ” to navigate to Settings and press “ ”
to select.
3. Press “ ” or “ ” to navigate to Radio Settings and press
“ ” to select.
4. Press “ ” or “ ” to navigate to Power Level and press “ ”
to select.
5. Press “ ” or “ ” to select the desired power level. Once the
level is selected the display shows “Success”.
6. Press the “ ” button to return to the home screen. The display
shows the Power Level icon, “
H
” for High Power and “
L
” for Low
Power.
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