1×6 switch

Last year I built a 1×6 antenna switch. The switch was designed for my SO2R station. The goal was to built a 2×6 switch (see Top Ten Devices app note) with a high isolation between the different ports.

Previous designs for a 2×6 switch failed due to bad isolation values (less than 50dB). These designs were build with loads of relays, but without a PCB. After some experiments with a A/B switch (with isolation values of around 100dB) the 1×6 switch was designed.

PD9X has some nice images of the switch.

schematic

PCB

BOM

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