I have two antenna switch projects.

The MOAS II (YCCC Switch) is being developed as a Yankee Clipper Club Project.  This is the project I am working on currently.

The MOAS (Mother of all Switches) is a two-radio antenna switch. It connects to the band outputs of the radios and does not require a computer to operate.

The Extensible Switch is a single through multi-multi switch which is designed to run from a PC This design is obsolete, replaced by the MOAS II.