Latch Relay Board
Latch relays is my favorite relays for use in the antenna tower, because they not use power after shift. But they need to be controlled with a PTT signal from the transmit output.
I have made a little PCB that gives the right signals and also respond back to the Sequencer what position it has.

My new sequencer board can sense the state of the relay that is placed by the antenna together with the preamp. So will the contacts not be damaged when going from TX to RX. Of cause the delays can be controlled and sense deactivated with some jumpers. Look at the project if you are interested.

Remote Power Controller
Here comes description of Power Controller Board and software

Remote Antenna Controller
Here comes description of Remote Antenna Controller and software