User's Manual

68P80801H45-1 1/20/2002 11
EBTS System Manual - Vol 2 Base Radio
QUAD Channel 900 MHz Base Radio Overview
QUAD Channel 900 MHz Base Radio Overview
The QUAD Channel 900 MHz BR provides reliable, digital BR capabilities in a
compact, software-controlled design. Voice compression techniques, time division
multiplexing (TDM) and multi-carrier operation provide increased channel
capacity.
The QUAD Channel 900 MHz BR contains the four FRUs listed below:
❐ QUAD Channel 900 MHz EX /Cntl
❐ QUAD Channel 900 MHz Power Amplifier
❐ QUAD Channel 800 MHz and 900 MHz Power Supply (DC)
❐ QUAD Channel 900 MHz Receiver (qty. 4)
The modular design of the QUAD Channel 900 MHz BR also offers increased
shielding and provides easy handling. All FRUs connect to the backplane through
blindmate connectors.
NOTE
Both the 800 MHz QUAD and 900 MHz QUAD Base
Radios use the same backplane and cardcage but call
out different FCC ID numbers.
Figure 2 shows the front view of the BR.
EBTS282Q_900
112601JNM
900 QUAD CHANNEL RECEIVER
QUAD CHANNEL POWER SUPPLY
900 QUAD CHANNEL RECEIVER 900 QUAD CHANNEL RECEIVER
900 QUAD CHANNEL RECEIVER
900 QUAD CHANNEL RECEIVER
900 QUAD CHANNEL RECEIVER
STATUS
RESET
TX4 TX4 TX4 TX4 PS EX/CNTL PA REF RX1 RX2 RX3 RX4
Figure 2 QUAD Channel 900 MHz Base Radio (Typical)