"Daniel James"  wrote in message
news:VA.00000d27.004c64ac@me.invalid...
> I only knew remote control of TVs was "a thing" when I was young because
> I'd seen an episode of an American show (my memory says it was "My
> Favorite Martian", which was shown over here in the mid 1960s, but I
> could be wrong) in which one of the characters (a teenage boy) was
> watching the neighbour's TV through a window, and had somehow acquired
> (stolen? duplicated?) a remote control so that he could change the
> channel.
>
> I had no idea, at the time (aged no more than about ten), how such a
> thing might have worked ...

I imagine working an ultrasonic remote through a window might be artistic
licence because I'd have through that the glass would have attenuated the
ultrasound a lot - as it would to an IR remote as well.

I'd no idea that ultrasonic remotes went back to the 1960s. I'd thought that
they were available only a few years before IR remotes - maybe late 70s or
early 80s. How wrong I was!

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