These darned old computers

From: Peter C. Wallace <>
Date: Tue Aug 27 20:13:00 2002

On Wed, 28 Aug 2002, Tony Duell wrote:

> Some US company (I forget who) made an ultrasonic remote controlled valve TV
> where the remote was essentially tuned metal bars that were mechanically
> hit when the button was pressed. No electronics in the handset at all.
> The receiver in the TV detected one of 4 (or so) different frequencies
> corresponding to the 4 buttons on the remote, and then operated a relay
> to trigger the appropriate function (I think channel selection was done
> using an electromechanical stepping swtich, etc).
> -tony
I think that was Zenith, My uncle used to have one. It would turn on if you
jingled your keys...

Peter Wallace
Received on Tue Aug 27 2002 - 20:13:00 BST

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