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 91 of 148
Uplink Input Shelf
80-301407
A
B
C
D
E
F
G
07-022005
07-004815
07-005745
02-010701
465.4 to 465.5MHz
02-010701
485.7 to 486.8MHz
02-010901
510.0 to 510.3MHz
4.7. Uplink Input Shelf 80-301407
Uplink Input Shelf 80-301407 is part of the main Splitter/Combiner assembly. Signals are received
from the leaky feeder and are then split into their various separate paths before being amplified by
external band specific amplifiers The unit is housed in a 4U, 19” rack mount case which is mounted in
Rack 1
Uplink signals are received at the port labelled “UPLINK INPUT” (Annotated A in the picture in section
4.7.4.1.) and there is a 30dB test port labelled “UPLINK INPUT TEST PORT” (B in section 4.7.4.1.).
Ports labelled F to J (Annotated C to G in section 4.7.4.1.) are the Uplink Outputs to the amplification
stages
Uplink Input Shelf 80-301407 also incorporates bandpass filtering for the three UHF bands, the filters
are placed in the RF path before the outputs to the external amplification stages
4.7.1. Uplink Input Shelf 80-301407 System Schematic
A Uplink Input from Radiating Cable
B Uplink Input Test Port (30dB Tap)
C Port F. Uplink VHF Output to VHF Amplifier Shelf 80-301409
D Port G. Uplink UHF Lowband Output to UHF Lowband Amplifier Shelf 80-301410
E Port H. Uplink UHF Midband Output to UHF Midband Amplifier Shelf 80-301410
F Port I. Uplink UHF Highband Output to UHF Highband Amplifier Shelf 80-301410
G Port J. Uplink 800MHz Output to 800MHz Amplifier Shelf 80-301411