> The triangular boxes are called "data-pick-up-units". They effectively split
> a single track circuit(traqnsmitter - rails - receiver) into many
> tracks(transmitter - rails - receiver - receiver - receiver, etc.) The'yr
> also know as pin-point detectors, which shoulod start to make their purpose
> clearer.
Thanls Shaun, thats the sort of explantion I was hoping someone could
provide.
Cheers,
Bill
Bill Bolton
Sydney, Australia