Here is my recent build of a remote control for a transmitter located in my two car garage right below my shack upstairs. The controller has ON/OFF, LOW/HI POWER, SPOT (oscillator on-off), and RX/TX. The sequencer also controls a hombrew TR relay and performs receiver muting. The controller uses K4KYV's design for a relay based RC delay sequencer style logic. The control cable is a Category 5 shielded twisted pair. The design is very simple; I love hearing the relays clack. I'm posting for your enjoyment.
Fleep
https://www.youtube.com/watch?v=_HprWiTrDOU