Well, we found out a bit too late there is no tuning capacitor in a 50 mile radius of where we are. And unfortunately, today being a Sunday, we can't get it shipped quickly either. So we're going to pillage one out of a radio, along with a few other handy components. Ideally, in the finished product, you would have a fixed, non-variable capacitor. We're finding what exact capacitance we need to make the radio receive 88.1 (or your channel of choice) properly, then ordering that capacitor from an electronics warehouse.