Does anyone know of a source for the printed circuit boards that Jeff Scherb used for the signal light circuit he published in the March 2001 Model Railroader?
Radio Shack sells the boards that you want I got mine from their online store. I don’t remember the web address. Dave
I checked and it is radioshack.com
The circuit boards are called Kepro, part no. 192-0380/kc1-46g fr-4dry flm pht1/1 don’t know if you need all this no. or not iy came from my packing list. These are dry film photo resist and come with the developer and instructions. it is not hard to follow the directions. the only other thing you need to do is have the photo negative made per the article. I purchased these in 2001 and paid $5.85 plus tax & shipping, they may be higher now. The board makes 6 circuits. Dave