Pre-Wound Coil Form
Posted on July 15, 2008
Hard to find Pre-Wound Coil Form.
Measures 2-1/2″ Wide x 1-1/4″ Dia. Inductance=350µH.
Nice size for loading a 3 meter antenna – just unwind to get the uH you need. More
My rough calculations indicate that with a 9’8″ long 1″ diameter copper pipe, 350 uH would tune you down to around 1400 KHz. If you use 1500, 1600 or 1700 you might try unwinding 10, 17 or 24 turns to get a match.
At $3.95 each these will be hard to resist.
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