User's Manual

Wireless Innovations Group
2601 Telecom Parkway
Richardson, Texas 75082
400/800 MHz Fiber Optic & RF Fed Bi-Directional
Amplifier Operations / Maintenance Manual
DWG NO: AE04B-A1669
Rev: B
Date: 06/18/2008
Page: 27 of 63
5.2.3 Photograph
5.3 480 MHz Low Isolation Duplexer (AE04A-D1443-001)
5.3.1 Description
The 480 MHz, low isolation duplexer provides the band selectivity and isolation
for the Uplink and the Downlink frequency. The duplexer is based on 4 ceramic
coaxial resonators design and is aligned carefully during production to optimize
the insertion loss, isolation, and VSWR
The duplexer is a fully passive device and should have an extremely long trouble-
free working life and requires no maintenance. Should the duplexer be suspect of
failure, the entire duplexer module should be replaced.
5.3.2 Specification
PARAMETER SPECIFICATION
Frequency Range: Downlink
Uplink
483.1375 – 483.2625 MHz
486.1375 – 486.2625 MHz
Passband Insertion Loss 3.5 dB
Passband VSWR < 1.2:1
Impedance 50 Ohms
Power Handling 5 Watt
Downlink-To-Uplink Isolation > 50 dB @ Receive Port
Uplink-To-Downlink Isolation > 55 dB @ Transmit Port
Operating Temperature
-20°C to +60°C