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UG-001 Daniels P25 Radio Systems
www.danelec.com
Chapter 3: P25 Radio System Confi gurations
16
User
Guide
A N A L O G C O N T R O L L E D B A S E S TAT I O N O P E R AT I O N
Daniels P25 Analog Controlled Base Stations can be operated in encrypted or clear modes.
Encryption Mode Confi guration
Encryption mode requires the
MT-4D Base
modules. The MT-4D Base modules may have optional
DES-OFB or AES encryption modules installed in the receiver and transmitter. The MT-4D Base
modules are used with a
CI-BC-4E
base controller in order to properly connect the analog audio from
the receiver / transmitter modules to an external device (such as a tone remote adapter). The base
controller also has the ability to clear the encryption keys in the receiver and transmitter through a
“Zeroize Key” button on the front of the base controller. No other module has the cabability to zeroize
encryption keys.
Figure 3-4 shows a P25 base station with MT-4D Base modules. The MT-4D Base modules must be
used in the encryption mode confi guration, as they are the only radio modules capable of having the
optional encryption / decryption modules installed in them.
Figure 3-4: Encryption Mode P25 Analog Controlled Base Station shown with Base modules
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
-
FREQUENCY (MHz)
xxx.xxxx
MADE IN CANADA
P25 BASE RX
NORM
SQ . DI SA B L E
OFF
PROG
BUS
A
B
A D
RF N
I
MADE IN CANADA
Model # Code
MADE IN CANADA
DANIELS
ELECTRONICS LTD.
P25 BASE TX
MADE IN CANADA
Model # Code
xxx.xxxx
PROG
BUS
A
B
MIC
RF OUT
A D
OFF
KEY TX
NORM
FREQUENCY (MHz)
MADE IN CANADA
DANIELS
ELECTRONICS LTD.
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.
Содержание P25
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