If you are interested, my general station setup is described here (my modest domestic station!):
And here are pictures of the high-band beams and the low band dipoles:
Audio1: Calling on right radio (IC756pro2), searching on left radio (IC706). While the rate on 20m is relatively low, the overall rate becomes quite good. The antennas are side by side, separated by12m.- Absolutely no desensitivation/interference between the 2radios, here at 150W power level.
Audio2: Same as above but the steppIR(on 15m) is looking at the back of OB6-3M(on 20m)... no interferences either. Note that it is possible to make 2 QSO's at the same time, while never having more than one signal on the air!
Audio 3: Same radio configuration but calling on 80m, while searching on 40. The antenna separation is only 1 m ! To hear me at LP-level, it means that VK6HD hears are much better better than mine!