RF Filter PCB Jig

thingiverse

This is a quick jig I made to cut and drill RF filter boards compatible with the QRP-Labs.com spec. Definitely cheaper and easier to buy the lowpass and bandpass filters from them, but in this case I needed a high-pass filter to knock out the AM broadcast interference, and figured why not make it the same size so it, and any other homebrew filters I make, will fit into QRP Labs band-switching boards and other projects. It's a handy standard. #### To use: - Slide the corner of a piece of copper clad into the slot to mark the size. - Cut out the board. Be sure it fits exactly into the depression in the jig - Clamp on top of a scrap board. - Drill all four holes (I used a Dremel and some little PCB bits) - Flip end-to-end and repeat - Scribe out the pads as needed for your project - Solder on the headers, capacitors, and inductors as needed #### Notes - .scad file included in case you want to tweak hole sizes - extra set of holes were in case I wanted to use this for the board it mounted on, but it made more sense to just make another, simpler, jig