User Manual

Axell Wireless Limited
Technical Literature
L.A. M.T.A. Remote Sites
Document Number 80-301401HBKM Issue No. 1 Date 13/06/2008 Page 10 of 148
3. In-Line BDA Wall Mount 80-301401
The wall mount In Line BDA consists of 4 wall mount enclosures:
80-301402 the Combiner unit.
80-301403 which houses the VHF and UHF Low Band amplification modules.
80-301404 which houses the Mid and High band UHF amplification modules.
80-301405 which houses the 800MHz amplification modules.
Downlink
The downlink signal is received from the leaky feeder and enters the Combiner 80-301402 where by
means of crossband splitter/couplers it is split into VHF, UHF and 800MHz paths, the UHF path is
further split into Low, Middle and Highband paths.
The VHF and UHF Lowband paths then leave Combiner 80-301402 and enters VHF/UHF BDA Unit
80-301403,
The UHF Mid and Highband paths leaves Combiner 80-301402 and enters UHF BDA Unit 80-301404
The 800MHz path leaves Combiner 80-301402 and enters 800MHz BDA Unit 80-301405
After being amplified the Downlink signals from the three BDA units then re-enter Splitter/Combiner
80-301402 where they are combined into a single path and fed into the leaky feeder.
Uplink
The Uplink signal signal is received from the leaky feeder and enters the Splitter/Combiner 80-301402
where by means of crossband splitter/couplers it is split into VHF, UHF and 800MHz paths, the UHF
path is further split into Low, Middle and Highband paths.
The VHF and UHF Low band paths then leave Splitter/Combiner 80-301402 and enters VHF/UHF
BDA Unit 80-301403,
The UHF Mid and Highband paths leaves Splitter/Combiner 80-301402 and enters UHF BDA Unit 80-
301404
The 800MHz path leaves Splitter/Combiner 80-301402 and enters 800MHz BDA Unit 80-301405
After being amplified the Uplink signals from the three BDA units then re-enter Splitter/Combiner 80-
301402 where they are combined into a single path and fed into the leaky feeder.