Yuri Blanarovich wrote:

Arie,
One more thing comes to mind, it would be desirable to be able to use insulated
wires in models. Typically house electrical insulated wire has about 5%
shortening coefficient. I think it would suffice to enter the shortening
coefficient (can be obtained by measurement). I believe NEC4 can accomodate
that and could serve as an example how to do it.
Also different material for elements within antenna, like copper (insulated)
wire quad and aluminum Yagi elements.

That's it besides transducer for the brain to "see" the design in my head and
optimize/model it in 3D :-)

Yuri, K3BU


Hi Yuri,
W4RNL has a very nice tech note on his site relating this shortening effect with
respect to the thickness of the dielectric and its dielectric constant. I used this
on my latest 20M Moxon and it came out right on the money.

Dale W4OP