Richard Clark wrote:
On Fri, 18 Aug 2006 11:43:34 -0400, Michael Coslo
wrote:

I find the topic interesting, and certainly the feedback I've gotten
from Richard and Roy have been very illuminating. So I encourage more on
the topic.


Hi Mike,

Going further, as you encouraged, you can observe the caged concept
applied to the Discone antenna at:
http://www.qsl.net/kb7qhc/antenna/Discone/discone.htm

Fascinating, and thank you! The discone and the Smith charts for it are
a great graphic tool. I note that your webpage is also featured in
Wikipedia.


This also shows how well 16 wires approximate a solid, and further, it
also shows how the geometry of the apex angle affects the matching
characteristics. This is shown in 7 Smith charts where that angle
varies from 20° to 90°.


Upon close examination, it appears I report the wrong interval of
frequency sweep as every 0.5 MHz. Certainly the range covers 1 to 30
MHz for them all, but it would appear that I shift to every 0.25 MHz
for 50° through 90°.

- 73 de Mike KB3EIA -