Dale Parfitt wrote in message Arie

Arie
As a retired person I do not have enough time for a lot of things so
as yet have not looked at your program. ( Old people have so many
projects but always under estimate the time required because
abilities deteriate as age progresses)
Could you tell me if you have the ability to make an impedance value
a variable which could be helpfull when designing loops?
Also, how many variables do you have available together with max
number of pulses used ? Since close coupling of wires can be very
sensitive to change, to me the above factors would be all important.
I would add however, that coupling is not viewed seriously in ham
radio so attempts to provide such features would provide little if
any reward.
Again thank you for all the work you have done on a sharing basis
to keep this hobby so interesting
Regards
Art


...
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