This thread is for Dave. So I'd rather not hijack this thread for a
separate and likely lengthy topic. So I will not comment here. Please start
a separate thread with a separate subject that includes "EZNEC
auto-segmentation". If you ever want yourself or others to be able to find
the discussion in the archives, a separate and pertinent subject will be
mandatory.
Thanks,
Guy K2AV, Antennaware Admin
On Fri, Jul 12, 2019 at 2:00 PM Mike Waters <mikewate@gmail.com> wrote:
> Hello Guy,
>
> It sound like you are saying that EZNEC's auto-seg feature should be
> overridden in some cases. I am all ears, sir! :-)
>
> The feature has *conservative* and *minimum recommended*, as you know.
> Are there cases when even *conservative* is not good enough?
>
> 73, Mike
> www.w0btu.com
>
> On Fri, Jul 12, 2019, 8:17 AM Guy Olinger K2AV <k2av.guy@gmail.com> wrote:
>
>> Hi Dave,
>>
>> What are you using for the vertical's counterpoise? What are you using for
>> the the ground type? Where is your source placed?
>>
>> These are essential to answer your question.
>>
>> 73, Guy
>>
>> On Fri, Jul 12, 2019 at 8:02 AM David Gould <dave@g3ueg.co.uk> wrote:
>>
>> > Most of my modelling has been with wire antennas but now I am modelling
>> > some verticals with elements having diameters of between 38mm and 25mm
>> > for 20m and 40m (and using drooping elevated radials made of wire)
>> >
>> > I usually use around 9 or 11 segments for a 1/4 wave element. I noticed
>> > that when I changed the number of segments the results for things like
>> > feed impedance changed quite dramatically.
>> >
>> > Are there some guidelines for the number of segments for a 1/4 wave
>> > straight wire element?
>> >
>> > How is the choice of segment length affected by the diameter of the
>> > element tubing? Is there a limit on the ratio of segment length to
>> > segment diameter?
>> >
>> > 73,
>> >
>> > Dave G3UEG
>> >
>>
>>
_______________________________________________
Antennaware mailing list
Antennaware@contesting.com
http://lists.contesting.com/mailman/listinfo/antennaware
|