UG-001 Daniels P25 Radio Systems
www.danelec.com
Chapter 3: P25 Radio System Confi gurations
17
User
Guide
Clear Mode Confi guration
In Clear Mode either the
MT-4D Base
or
MT-4D Repeater
modules may be used. The MT-4D Base
or Repeater modules are used with a
CI-BC-4E
base controller. This allows the analog audio from the
receiver / transmitter modules to be connected to an external device (such as a tone remote adapter).
Figure 3-5 shows a P25 base station with MT-4D Repeater modules. If the encryption mode
confi guration is not required, the MT-4D Base or MT-4D repeater modules may be used for this clear
mode confi guration base station.
Figure 3-5: Clear Mode P25 Analog Controlled Base Station shown with Repeater modules
The MT-4D Base or MT-4D Repeater modules used in a base station confi guration may also be
confi gured as a clear mode base station with repeat capability. See Repeater Operation with External
Analog Wireline Control for more information.
FREQUENCY (MHz)
xxx.xxxx
MADE IN CANADA
P25 RECEIVER
NORM
SQ . DI SA B L E
OFF
CNTL
BUS
A
B
A D
RF N
I
MADE IN CANADA
Model # Code
MADE IN CANADA
DANIELS
ELECTRONICS LTD.
P25 TRANSMITTER
MADE IN CANADA
Model # Code
xxx.xxxx
CNTL
BUS
A
B
MIC
RF OUT
A D
ANALOG
DIGITAL
OFF
KEY TX
NORM
MIC MODE
FREQUENCY (MHz)
MADE IN CANADA
DANIELS
ELECTRONICS LTD.
P25 BASE
CONTROL
BNK
CI-BC-4E
PULL DOWN
TO REMOVE
5
9
13
RX A
A
B
BNK
5
9
13
TX A
A
B
TX A
TX B
Secure
Clear
Zeroize
Key
Local
Disable
Enable
PROGRAMMING PORT
DSP-223
PTT IC
HANDSET
POWER
PTT
MONITOR
FUNCTION
CTCSSLINE RX
LINE TX
+
RADIO TX
+
RADIO RX
LINE TX LINE RX RADIO TXRADIO RXCTCSS
RADIO TX
-
GROUND
LINE TX
-
SYSTEM MONITOR
VOL
AUDIO
A
B
2
1
5
4
3
6
7
8
12
11
10
9
FUNCTION
METER
+
-
PTT
MADE IN CANADA
DANIELS
ELECTRONICS LTD.
