User's Manual

Band Selective Repeater
A cabinet (the left part in Figure 5-3) for a band selective repeater is
equipped with two pair of BSA and PA boards, one pair for downlink (DL)
and one pair for uplink (ULS). The described cabinet is equipped for
bi-directional band selective operation.
The cover (the right part in Figure 5-3) can be equipped as well. The
cover board positions are shown in the figure.
BSA boards are used for band selective systems either with a fixed band
width of 900MHz or an adjustable band width.
Main units: ALI Alarm Interface board
BSA Band Selective Amplifier board, fixed or adjustable band width
CU Control Unit board
DC Directional Coupler
DPX Duplex filter
LNA Low Noise Amplifier
PA Power Amplifier board
PSU Power Supply Unit
RIA Repeater to Repeater Interface Adapter (optional)
123 4
567 8
BSA
DL
MS
Mobile station
antenna
BS
Base station
antenna
PA
DL
BSA
UL
PA
UL
LNA DL
Downlink
LNA UL
Uplink
DPX
MS
DC
MS
CU
ALI
DC
BS
DPX
BS
PSU
RIA
BSA
DL
PA
DL
BSA
UL
PA
UL
Figure 5-3. Band selective repeater
ALLGON System AB AR Repeaters & OMT32 Hardware – Functional Description
User’s Manual VD202 90/EN Rev. 1A 1999-07 5 - 6