Thank you John, V3lcr0, and marvosa, for the incredibly helpful replies above.
I've taken time to read carefully and try and learn from and understand all the points made, which is why this reply has taken some time. I now realise that my question was, as you said, poorly worded and a bit too clueless. I didn't actually know the right question to ask. I think I have a much more specific focus and a bit more of a clue now. Thank you for the effort in helping me.
I've posted my more focused question in a new thread under "wireless" so this one can drop to the end and not accidentally confuse anyone who finds my OP unhelpful. :) It should be more "to the point".