The specifications for DiSEqC switches usually states that the frequency range bottoms out at 950MHz. What happens if terrestrial signal has been diplexed in ahead of the switch? Is everything below 950MHz passed to the output, regardless of which input is selected? Is it filtered out?
If you have multiple terrestrial antennas, and perhaps cable service, it would be nice to be able to diplex them in ahead of the
DiSEqC switch. You could then control which terrestrial signal is coming down the line in the same way that you select a satellite. It would be a nasty thing to test - does anybody happen to know?