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RDR42x0 Professional Digital
Two-Way Radios
Communications Systems
Push-To-Talk (PTT) Button
The PTT button on the side of the radio has two main functions:
- Press and hold down PTT button to initiate and call and talk.
Release the PTT button to listen. The microphone is activated
when the PTT button is pressed.
- If a call is in progress, the PTT button allows the radio to transmit to
the other radios that are part of the call.
Note: If the Talk Permit Tone is enabled, wait until the short alert tone
ends before talking.
During a call, if the Channel Free Indication feature is enabled on your
radio (programmed by your RCA Communications Systems Dealer),
you will hear a short alert tone the moment the target radio (the radio
that is receiving your call) releases the PTT button, indicating the
channel is free for you to respond. You will also hear the Channel Free
Indication tone if your call is interrupted, for example, when the radio
receives an Emergency Call.
Switching Between Analog/Digital Mode
Each channel in your radio can be programmed as an analog channel
or a digital channel. Use the Channel Selector Knob to switch between
an analog or a digital channel.
Note: When switching from digital to analog, certain features of the radio
become unavailable.
Accessing the Programmed Functions
You can access various radio functions one of the following ways: A short
or long press of the relevant programmable buttons. OR -
OK
- To access the main menu, press the [
the menu options, press "
- To select a function or access a sub-menu, press the [
- To go back one menu level, or return to the previous screen, press
the [
] button.
BAC K
Note: Your radio will exit the menu after a period of inactivity and returns
to Main Menu.
BACK
] button. To toggle through
OK
" or "
".
] button.
OK
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INSTRUCTION MANUAL
Radio Keypad (RDR4280 only)
You can use the alphanumeric keypad to access the radio features. You can
also use the keypad to enter subscriber numbers or IDs, and text messages.
Note: Some characters require that you press a key multiple times. The
table shows the number of times a key needs to be pressed to generate the
required character.
Number of Times Key is Pressed
Key 1
2
3
4
5
1
.
,
?
!
@ &
1
,.?
A B C
2
2
abc
D E
F
3
3
def
G H
I
4
4
ghi
J
K
L
5
5
jkl
M N O 6
6
mno
P Q R S
7
7
pqrs
T U V
8
8
tuv
W X Y
Z
9
9
wxyz
0 NOTE: Press to enter "0" and long press to
activate the CAPS lock. Another long press to
0
CAPS
turn off the CAPS lock.
* or Del NOTE: Press during text entry to delete
*
DEL
a character.
# or Space NOTE: Press during text entry to
# ˽
insert a space.
Operational Status Indicators
Your radio indicates its operational status through the following:
• Display Icons (RDR4250 / RDR4280)
• Call Icons (RDR4250 / RDR4280)
• Sent Item Icons (RDR4250 / RDR4280)
• LED Indicator (Entire RDR42x0 Series)
• Audio Tones (Entire RDR42x0 Series)
6
7
8
9 10 11 12 13
'
%
-
:
*
#
5
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