Build Your Own Coils The Coil - AD5X
brass rod, and then solder the brass rod to the coupling. See the "1/4" fiberglass coil support" photos. Conclusion I've described a way for you to build low-cost high-Q air-wound inductors and coil supports. Give it a try, and save some money on coils for your homebrew antenna projects. 1/8NPT CLOSE nipple 1/8 NPT Brass ...