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2 results found for 'Derek Mundy'
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8-Way signal operating board
Issue 230 (2014)
p.93
GF Controls proprietors Geoff Peters and Frank Jones introduce us to a new operating board and setting box, a useful and important development in the control of servo-operated signals
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The Ups and Downs of Semaphore Signals
Issue 230 (2014)
p.89
With a clear and practical explanation, Derek Mundy calls on his years of experience building signals, to tell us how he chooses to operate them today using the GF Controls setting board