Talk:Quindar tones

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As part of the discussion about the selection of audio tones, I vaguely remember there being certain choices for audio frequencies that would disable or otherwise interfere with the operation of long-distance phone repeaters that were in use at that time. My guess is that the selection of the frequencies for the Quindar Tones would have taken this into consideration, but I can't find any information that would validate this assumption. Maybe somebody else knows more.

Gary Neff used to have some nice .wav files on his site that would generate the two tones, but that site has since disappeared. I'd love to be able to link to those audio files.

I saw some discussion on various sites that I googled about the name Quindar. There isn't strong evidence that this name came from the company that built the equipment, but it's a pretty good guess. Since the name is so unique, it would be great to include a solid reference for this if it exists.

- todd

For more about the "audio frequencies that would disable or otherwise interfere with the operation of long-distance phone repeaters" see Blue box et al. Tonywalton |Talk 09:45, 8 April 2006 (UTC)