Mini 2.2 GPIO pin for TX on/off

Hi. I’m using LimeSDR mini 2.2 with an LNA/PA and RF TX/RX relay (half-duplex)

Where do I find a GPIO pin that toggles with the TX on/off please?

Of course there is the TX LED, but is there a better, GPIO pin on the board I can use?

Peter M0LNB

I found that SDR Console has a relay driver and GPIO control, so all is well in the world.