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US2003130013A1
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Antenna/coupler assembly for coaxial cable
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Temperature compensating cavity bandpass filter
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Parallel fed collinear antenna array
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Signal transmission antenna mast
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Power Divider directional coupler
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Comb-line filter
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Failure responsive alternate amplifier and bypass system for communications amplifier
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Tower mounted preamplifier
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Fixture for mounting cylindrical cavity filters
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Bi-directional filter system for amplifying signals in separate frequency bands
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Cavity filter and multi-coupler utilizing same
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Series notch filter and multicoupler utilizing same
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Notch filter network
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