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Simply preamplifier module for HF: link

This is simply RX module with 2N5109.

2-Way RX splitter - magic tee: link

Two way RX antenna splitter / combiner. 

4-Way RX antenna system: link

This is system of two pieces of Bi-dir beverage antennas with middle 4-way switch and controller.

With BPFs, preamp etc.