6×1 antenna switch

This is complete project for 1×6 antenna switch. It was bult in more than 50 pieces around the world and performs really good. Even big guns use it for their systems. The project was designed with help from other OMs (S55O, S59MA, S50LD, S51CT, S51ZJ, SM2WMV/SJ2W and others).

6×1 antenna switch

The schematic is “boring”: nothing special. Just connectors and relays and some protection:

Schematic for 1×6 antenna switch

PCB board is double sided, “sunshine” design. This simetrical design provides equal characteristics for all 6 outputs:

Connector side of the PCB

Relay side of the PCB

And here is Altium designer project:

Altium project for 1×6 antenna switch

If you don’t have altium designer, just send this file (with GERBERs) to your favourite PCB maker (I prefer PCBWay) and order 1,6mm PCBs:

Gerber and drill files for the project


Good antenna switch has no value without proper housing. I designed folded sheet metal housing. Here are complete documentation for 2 parts including 3D step files:


Housing – PDF documentation



Here is assembly process in pictures:

Here is another gallery with step-by-step assembly process on S55O page.

And final test (isolation and through loss) for all HF bands including 6m:

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