Re: "INDENTRA" train describer loops: ??? (563210)

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Posted by Stephen Bauman on Thu Sep 11 21:16:17 2003, in response to Re: "INDENTRA" train describer loops: ???,
posted by SelkirkTMO on Thu Sep 11 16:52:20 2003.

Wasn't it a simple matter of "toilet lid up," detuned a resonant circuit as it went by, "toilet lid down," no detuning and that's how it worked?

Not quite. There were at least 3 settings, I've heard of 5 settings. The wayside equipment was essentially a grid dip meter with 5 different frequencies. The switch selected one of the resonant frequencies.

Responses

• NEW: Re: "INDENTRA" train describer loops: ??? - Robert King - Thu Sep 11 23:19:18 2003
  • NEW: Re: "INDENTRA" train describer loops: ??? - Stephen Bauman - Fri Sep 12 08:47:20 2003
    • NEW: Re: "INDENTRA" train describer loops: ??? - Dan Lawrence - Fri Sep 12 09:01:15 2003

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