PW January 2019 - PCB overlays and Fig 3 for Doing it by Design

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Here are PDFs of Fig. 3 and the PCB overlays for January's Doing it by Design column.

https://azure.wgp-cdn.co.uk/app-radio-enthusiast/posts/Reduced-dibd-download-PDF1.pdf

https://azure.wgp-cdn.co.uk/app-radio-enthusiast/posts/Reduced-dibd-download-PDF2.pdf

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