Dave Heil wrote:

...
Heck, Brian, I was just going to suggest that you make some
substantional portion of your antennas out of long steel springs. You
could tie a rope to an end and change bands by simply letting out on the
rope and allowing the springs to compress, heh heh.

Dave K8MN

Actually, a very good recommendation--for some limited applications ...

I have seen just such done, only with phosphor-bronze springs, and of
limited frequency bandwidth ...

JS