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My Secondary Coil is made of 6" PVC wrapped with 20 AWG magnet wire. It is wrapped 30" for around 720 turns. The bottom end cap is cut low to allow room for windings and is epoxied on. The RF ground mounting plate is bolted to this. The top end cap is free, and has a wired bolt for connecting and mounting the toroid.
Click here to see how I made the Secondary Coil.
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