Richard Pike wrote:I thought i had everything straight in my mind regarding the operation of the GE blocks but something came to light over the weekend that has cast some doubts.. If we say a white plunge buts the block to line clear, a red plunge moves the needles to train on line and a black plunge is neutral. I thought 'is line clear' would be answered on the white plunger and train on line answered on the red, however i've been told in at least one area 'is line clear' was answered by one white plunge and repetition of the is line clear code on the black plunger. Any thoughts?
Pete2320 wrote:I can only see red and white plungers! Where is the black one?
John Webb wrote:Richard - at St Albans South we have a buzzer to give the usual short buzz produced by a train passing our IBS signals on the more complex demonstrations/simulations. This buzzer is also operated by the simulator if something has been done incorrectly. For example in the absence of electric locks on our starter signals, if a starter is pulled off without LC being obtained, the buzzer gives a series of 'raspberries' to say you've done something wrong, and only stops when you have replaced the lever. Likewise for other errors! (On our simple demo this feature is disabled to allow greater flexibility in operating levers for demonstration purposes.)
Richard Pike wrote:I've not got any train register books from Soham or Chippenham Junction so i don't know how thing's were done regarding King's Siding. I believe a train could be shut in. Once it was in and the ground frame normalised Chippenham would send 'train out of section' but what would he need to do to get the train out again? Block back outside home signal springs to mind but was that the case?
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