These days almost everything is wireless and cheap. We're surrounded by an absolutely packed electromagnetic spectrum, stuffed with everything from Bluetooth to HDTV. Recently, even power can be transmitted wirelessly. So why is wireless video so expensive and difficult? Most of the times I have needed to use wireless transmission of video in a theatrical setting, it was in the form of either a camera or a screen that needs to travel on a free-moving unit or be carried by an actor onstage. ...

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