>>What are the plastic ribs on B&W coil stock made of? (I'm looking for
>>different mounting methods for ATU coils and a 4CX1000A linear Pi-Tank.)
Polystyrene rod, heated until it flows into the coil.
Effective for QRP, sometimes given to flowing in QRO.
You might consider pre-made porcelain coil forms, or custom make your own
-- it's not particularly difficult.
Jim N6OTQ
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