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Model Railway Semaphore Signal PCB patterns (PDF download) [09103221-2] PDFs with the PCB designs for the Semaphore Signal for OO Gauge Model Railways. Both PCBs are effectively single-layer and are in separate PDFs. Cat No SC6371. Price: Free Files: Semaphore Control PCB (09103221).pdf (6.5KB) Semaphore Signal Blade PCB (09103222).pdf (1.8KB) Related to: Project: Railway Semaphore Signal (April 2022 [print issue] [online issue]) Other items relevant to this project: Model Railway Semaphore Signal control PCB [09103221] ($2.50) Add to trolley Model Railway Semaphore Signal blade PCB [09103222] ($2.50) Add to trolley PIC16F88-I/P programmed for the Model Railway Semaphore Signal [0910322A.HEX] ($15.00) Add to trolley Firmware for the Model Railway Semaphore Signal [0910322A.HEX] (Free) Add to trolley