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Copyright © 2020 RCA Communications Systems
www.RCACommunicationsSystems.com
Communications Systems
RDR42x0 Professional Digital
Two-Way Radios
INSTRUCTION MANUAL
You can select one of the following options while viewing a sent
message:
• Resend
• Forward
• Detail
• Delete
To perform any of the functions follow the steps described in section
Managing Failed-to-Sent Text Messages
.
Deleting All Sent Text Messages from Sent items
1. Press “ ” to access Menu.
2. Press “ ” or “ ” to navigate to Messages and press “ ”
to select.
3. Press “ ” or “ ” to navigate to Outbox and press “ ” to
select.
4. Press “ ” or “ ” to navigate to Delete All and press “ ”
to select.
5. The display shows Delete All?, press “ ” to confirm. The display
shows Success.
Deleting All Text Messages from the Inbox
1. Press “ ” to access the menu.
2. Press “ ” or “ ” to navigate to Messages and press “ ”
to select.
3. Press “ ” or “ ” to navigate to Inbox and press “ ” to
select.
4. Press “ ” or “ ” to navigate to Delete All and press “ ”
to select.
5. The display shows Delete All?, press “ ” to confirm. The display
shows Success.
Note:
When you select the Inbox and it contains no text messages, the
display shows Inbox Empty.
Encryption
If enabled and programmed into your radio, this feature helps to prevent
eavesdropping by unauthorized users on a channel, using software-
based encryption solution. The signaling and user identification
portions of a transmission are not encrypted. Your radio must have
encryption enabled on the channel to send an encrypted transmission,
although it is not required for receiving encrypted transmission. Your
radio supports two types of encryption:
• Basic Encryption
• PRODIGI Advanced Encryption
• DMRA ARC4 Encryption
Only ONE encryption type can be assigned to your radio.
To decode an encrypted call or data transmission, your radio must be
programmed to have the same encryption key (for Basic Encryption),
OR the same Key Value of up to 18 characters for PRODIGI Advanced
Encryption as the transmitting radio.
If your radio receives an encrypted call that is of a different encryption
key, OR a different Key Value and Key ID, you will either hear a garbled
transmission (Basic Encryption) or radio’s audio will be muted (PRODIGI
Advanced Encryption). The LED lights up solid green while the radio is
receiving an encrypted transmission.
Note:
Encryption is available only in digital mode. The feature must
be enabled and programmed by your RCA Communications Systems
Dealer.
Replying to a Text Message from the Inbox
1. Press “ ” to access Menu.
2. Press “ ” or “ ” to navigate to Messages and press “ ”
to select.
3. Press “ ” or “ ” to navigate to Inbox and press “ ” to
select.
4. Press “ ” or “ ” to select Inbox List and press “ ” to select.
5. Press “ ” to navigate to the desired message and press “ ”
to select. Press “ ” again to enter the Options Menu.
You can select one of the following options if the message:
• Reply
• Forward
• Detail
• Delete
6. Press “ ” or “ ” to navigate to Reply and press “ ” to
select.
7. Press “ ” or “ ” to navigate to New Message or Quick Text
and press “ ” to select. Depending on your choice, use the
keypad to write your message or press “ ” or “ ” to navigate
to the desired Quick Text Message and press “ ” to select. If
you’ve selected a Quick Text Message you can use the keypad to
edit your message, if needed.
8. Press “ ” to confirm.
9. Press “ ” to Send.
10. If the message is sent successfully, a tone sounds, and the display
shows Success. If the message is not sent, a low tone sounds, and
the display shows Failed. If the text message fails to send, the radio
returns to the home screen.
Making an Encrypted Call
Your radio may have a mix of encrypted and unencrypted channels. To
make an encrypted call:
1. Using the channel selector knob, switch to an encrypted channel.
2. When on the desired channel, press the [
PTT
] button to make the
call, the LED indicator lights up red.
3. Hold the radio vertically 1 to 2 inches (2.5 to 5.0 cm) from your
mouth and then speak clearly into the microphone.
Note:
If Talk Permit Function is enabled, wait for the Talk Permit Tone
to sound before speaking.
4. Release the [
PTT
] button to listen.
5. When the target radio responds, the LED lights up red.
6. If there is no voice activity for a predetermined period of time,
the call ends. The radio returns to the screen you were on prior to
initiating the call (RDRD4250 and RDR4280 only).
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