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Two Channel 400MHz Cell Enhancer
User Handbook
Handbook N.-50-128501HBK Issue No:-A
Date:-12/08/2005
Page:-
17 of 39
4. SUB-UNIT MODULES
4.1 UHF Notch Filter (02-020001)
4.1.1 Description
The notch reject filters fitted here are tuned to eliminate the unwanted channel frequencies of
the band 1 amplifier (where the filters are fitted in the band 2 path and vice-versa).
The filters should require no routine maintenance, being totally passive devices. If a filter is
suspected of failure, no invasive measures are recommended as even opening the case of the
device could render it unusable.
4.1.2 Technical Specifications
PARAMETER SPECIFICATION
Passband1 492.5-494 & 490.6MHz
Passband2 481-489 & 496.3-496.6MHz
Stopband1: 496.3 & 496.5MHz
Stopband2: 492.5-494, 496.3-496.6 & 494-494.5MHz
Insertion Loss: 0.6dB typical
Rejection: 40dB typical
Power Rating 50 Watt
Impedance 50
VSWR Better than 1.22:1