Id be personally afraid of using a coupler on it for multiple radios just for the reason of if something funky happens to the coupler, would it bleed high rf into the wrong radio at the wrong time and blow out the receive circuit. I have a good quality coax switch that I use to switch different specific band antennas into the HF radio, and then use separate antennas dedicated for other radios on their own coax run. You can also turn the switch backwards and use multiple radios for one antenna, as long as you make sure you are on the correct port on the switch before you transmit. Spent a lot of time reviewing switches before I got one. Stay away from any of the chinese garbage, they look pretty but reliability and performance is bad. An automatic tuner would be also worthwhile since swr is never exactly where you want it to be, especially on multiband antennas
