> OK, here's a question: any recommendations for a coil former material
> that can withstand a bit of heat? The 80/160m tank coil in my amp gets
> quite warm during RTTY contesting - not hot enough to indicate a design
> problem, but even a moderate increase in temperature makes the
> fibreglass tubing former smell quite unpleasant.
Ian:
How about no form at all? Can you increase the wire or tubing size and only
use a form for winding purposes only -- then remove the form. With large
enough wire or tubing, a form should not be required unless you have many
turns.
In the alternative, I've seen many ceramic coil forms on the surplus market
from EF Johnson, Millen, and National.
Paul, W9AC
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