Yes, you can make a 1 GHz filter out of through-hole components ... [VK2SEB] has a better idea for prototyping PCB filters: use copper tape on blank FR4 sheets. The first, and simplest, filter ...

[Carl] wanted to prototype his circuits quickly using ... Of course, like most homemade PCBs, there are no plated-through holes or solder mask or plating. Of course, you could add all of those ...