[![radio][1]][1] [FM Crystal Radio][2] **L** - 4 turns #18 copper or silver wire, 12mm inside diameter, tapped at 2.5 turns **Ant** - 7 inches of #18 bare copper wire **C1** - 18 pF ceramic capacitor **C2** - 50 pF air variable capacitor (? for 93.5MHz) **D** - 1N34 diode or rock crystal **R** - 150K resistor 1. How to tune [simplest FM][3] at 93.5MHz radio station by fixed value of C1 (18pF), C2? (any formula would very helpful so that I can tune to any radio station) 2. Can I use diode 1N4007 instead of 1N34? [1]: https://i.sstatic.net/epRz4.jpg [2]: http://solomonsmusic.net/FM_CrystalRadio.html [3]: https://electronics.stackexchange.com/questions/217083/simplest-fm-radio-receiver