[PRCo] Re: Signalling

[Fred Schneider]

You need a qualified electrician to answer that one.  Look for a signal man.  And
when you get the answer, relay it on to me.  Try Scott Davis at Arden for an
answer.  By the way, his girl friend drives trackless for Muni ... she is
probably the only imported female from Pittsburgh.

Jim Holland wrote:

> Good Morning!
>
>         Probably a question for FWS3.......
>
>         How did the impedance bond in the US&S signalling work?    How did it
> allow ground to pass while blocking signal voltage?    Axles short out
> low-voltage current to run signals, correct, which causes red board?
> Failure of the low-voltage current automatically set all signals red,
> correct?
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