User Manual

5 Ch. VHF Radio Repeater Equipment
Document Number 50-189201HBK – Issue 1 Page 25 of 48
4.6. BDA VHF UPLINK OUTPUT COMBINER (50-189209)
The Uplink Output Combiner (50-189209) takes the five separate uplink outputs from the Channelised
Amplifier shelves and combines them into three signal paths Channels 3 and 4 are combined by a
Hybrid Combiner, Channels 5 and 1 are combined by a second Hybrid Combiner. Channel 2 passes
straight through. The three resultant outputs are then fed to the second stage of the cavity filter in
rack 3
4.6.1. BDA VHF Uplink Output Combiner (50-189209) Major Components
Component
Part
Component Part Description Qty Per Assembly
05-000103 Hybrid Combiner 2
19-000822K 2U Rack Mount chassis 1
Top View – lid removed
Close-up
of connectors
A Port H2 U/L Channel 2 output
B Port D5 U/L Channel 5 input
C Port D3 U/L Channel 3 input
D Port D1 U/L Channel 1 input
E Port H3 U/L Channel 1/5 output
F Port H1 U/L Channel 3/4 output
G Port D4 U/L Channel 4 input
H Port D2 U/L Channel 2 input