[TowerTalk] C31XR versus SteppIR

[Jim Lux]

At 10:38 AM 5/13/2007, john at kk9a.com wrote:

>Joe responded (actually shouted) this statement after I stated the following
>last Friday night when comparing the subject antennas:  "The SteppIR, has no
>element interaction problems because the element lengths are adjustable,
>however the spacing is not adjustable and not optimum",   Since no limits
>were defined, I understood his comment to mean that within the frequency
>range of the SteppIR, the element spacing is irreverent.  If this is
>incorrect, then Joe, W4TV, is actually agreeing with me, that the element
>spacing of the SteppIR is not optimum on all bands.
>
>John KK9A


What's optimum?
Is the deviation from whatever definition of "optimum" is chosen 
actually a significant (or even measureable) difference?