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RF switch for half-duplex sequencing on amateur UHF satellite ground station

Your diagram is wrong - you need the LNA in the Receive path, switched out of the way when you're transmitting. (Unless the LNA has its own internal auto bybass). So the Tx/Rx switch is the first ...
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RF switch for half-duplex sequencing on amateur UHF satellite ground station

I think what you want is an RF circulator. Circulators help direct the flow of microwave or radio-frequency signals in RF systems. Usually 3 or 4-port device that transmits input signal from 1 port ...
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RF switch for half-duplex sequencing on amateur UHF satellite ground station

What you want is for path B to be terminated — to have a dummy load attached — while the switch is in transmit mode, rather than being an open circuit that can act as an antenna for high-impedance ...
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