This past weekend I was talking to a friend of mine who is pretty knowledgeable about satellite systems. He had an old C band dish in the 80s/90s, then had Directv for about a decade, until 4 or 5 years ago when he moved to a house surrounded by tall trees with FIOS availability He told me a lot of interesting things, but one thing he said really surprised me, though he insisted it was true. He said if you have many/all receivers on a multiswitch tuned to the same channel (or different channels, so long as they're all using the same transponder) the signal strength is reduced because the signal is essentially split a bunch of times within the multiswitch. If you tuned a different channel (on a different transponder) on all receivers except one, that one would realize improved signal strength. Can anyone confirm whether this is true or not? If true, would it ever matter in the real world, or is splitting the signal 16 ways in the largest multiswitches not dropping the signal by enough to matter unless you're already right on the edge as far as signal strength is concerned? I could see maybe that might matter during a rainstorm where you're close to seeing rain fade, but it shouldn't matter on a clear day assuming your dish isn't out of whack. Unless it dropped the signal near/below the receiver's tolerable S/N ratio, you wouldn't be able to see it on the signal strength screen, since that measures bit error rate not signal power in dbm, right? If true on legacy multiswitches, would it still be true on SWM? I know the SWM multiswitches (at least the -16, guess I'm not positive about the -8) have gain control and automatically amplify the SWM outputs to about -30dbm. If the incoming signal was weak, due to a long run from the dish, misalignment or rain, would the internal "splitting" of the signal 16 ways be enough to degrade the signal too far to where the amplification back to -30dbm wouldn't help? The only way around that would be to amplify the signal before it reached the multiswitch, correct? Or maybe the SWM switches already amplify the incoming signal before the "splitting" and then do the gain control for fine tuning at the end? I really wish there was more information out there about how these things operate internally. Sorry if these are stupid questions, I never really gave much thought to how a multiswitch works before but now I'm really curious. Does anyone know of any good in-depth documentation? I could describe in detail how ethernet switches and IP routers operate, and point others to that information, but I have no clue how a multiswitch works. I don't even know if they are solid state or there are some mechanical switches inside. I've heard there are, but maybe that's no longer true.