You may have better luck by using sone soft copper tubing. Dimensional
stability would be one advantage.
You could use ScotchKote or some insulating paint if you needed it to be
insulated.

"dansawyeror" wrote in message
...
Good morning. I would like to experiment with making a high Q coil for
creating
a tuned radial counterpoise. Reg's program predicts a coil of about 70 uH
will
create a match. One way to create such a coil would be to wind coax and
use the
shield as the conductor. Besides the obvious loss of physical stability
due to
lack of a form what are the limitations or drawbacks from using the
shield?

Thanks - Dan - kb0qil