User's Manual

Doc. No.
Rev.
Date
1.00
2011-12-08
Damm Cellular Systems A/S, Denmark
TETRAFLEX
®
V7.5 MANUAL - Antenna System for BS41x
TetraFlex® 7.5 Manual 4-3
4.1.2 Typical antenna configuration
The drawing below shows a typical antenna arrangement for a base station. If the duplexer is
used it combines the RX-A and TX feeder to e single antenna. The feeder system from the
BS to the top of the mast is the same for both cases.
4.1.2.1 TMA412/TMD412
A block diagram of the TMD412 is shown below. The TMA412 is identical except for the
omitted Duplexer.
RX-A TEST RX-B GPS1 GPS2 TX
Base Station
ANT-A ANT-B
TMA412
RX-A TEST RX-B
RX-A
RX-B
TX
RX+Test feeders:
Cable: ¼”
Loss: <8dB
Conn.: N-male
TX jumper feeder:
Cable: ¼”
Conn.: 7/16 male
TX jumper feeder:
Cable: ¼”
Conn.: 7/16 male
TX feeder:
Cable: 7/8”
Conn.: 7/16 female
RX jumper feeders:
Cable: RG214
Conn.: N male
>30dB
GPS1 GPS2
GPS feeders:
Cable: RG174
Loss: <10dB
Conn.: BNC male
+6dB nom.
+15dB typ.