Re: NEC-LIST: Coil-loading.

At 1:55 PM -0600 2/8/05, Jerry Flanders wrote:
>Crafts stores sell large styrofoam toroids....

And it seems like it'd be easy to carve a toroid out of a block or a
thick sheet of a stack of styrofoam sheets stuck together. Styrofoam
has very low loss and probably could be left in place without
substantially reducing the Q or the self-resonant frequency of a
coil. However, I would not leave styrofoam in a transmitting coil
because an arc, occurring for any random reason such as an insect
nest on/in the coil, could ignite the styrofoam.

-Chuck, W1HIS

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