Topband: FCP Question

[Wes]

I though everybody knew this.

BTW, I heartily recommend AutoEZ as adjunct to EZNEC.  Dan's site (AC6LA.com) is 
a treasure trove even if you don't buy the program.

For example of a feature:  "With AutoEZ you have a second choice for the method 
of segmentation. You can specify a physical length for each segment. This second 
method may be useful in cases where it is important to keep the segment 
junctions aligned between closely-spaced wires"

Wes N7WS


On 1/9/2021 1:07 PM, Richard (Rick) Karlquist wrote:
>
>
> Excellent navigation!  I found it easily.  I will quote the relevant
> text from it below:
>
> -------------------------------------------------------------------------
>
> Closely Spaced Wires
>
> When modeling parallel or nearly parallel wires which are closely spaced, it 
> can be very important to align the segment junctions. That is, they should be 
> directly across from each other. This is particularly true if the segment 
> length is greater than the wire spacing. As the segment length gets shorter 
> compared to the wire spacing, this requirement becomes less important. When 
> segment junctions are misaligned but need to be aligned, results can change 
> dramatically as segmentation is changed.
>
> The easiest way to assure that aligned parallel wires have aligned segment 
> junctions is to give the wires identical lengths and numbers of segments. If 
> the wires are staggered or different lengths, break them into more wires. Make 
> the portions of the wires which are directly across from each other into 
> separate wires of equal length and number of segments. An example of this 
> technique is shown below, where the long wire of a J-pole antenna was broken 
> into two wires. Wire 4 is made the same length and given the same number of 
> segments as parallel wire 6. The upper wire is segmented to make its segment 
> length approximately equal to the segment length on wire 4. (This is a close 
> up view – some of the long wire, and its number, aren't shown.)
>
> ------------------------------------------------------------------------
>
> So I was indeed clueless, but no more.  Basically, all I need to do
> is align the segments; who knew?  Certainly isn't obvious.  Now I get it.  
> Very clear writing by Roy, as usual.  The J-pole example is
> perfect.
>
> 73
>
> Rick N6RK