I have found out that pin 6 is the RSSI pin for the foxtech 5.8 video receiver, this may be the same for your system but it may be worth clarifying which is pretty simple, all you need is a multimeter.
I cannot be responsible if you blow anything up though, you open up your eqiupment at your own risk
I have made i open source arduino based diversity system a while back, capable of switching up to 5 receivers :-) Look at my vids
petleh82 8 months ago