[TowerTalk] Triband Stacking Distance or antenna height?

[Richard Thorne]

Thanks for the replies,

I reminded myself that the C31XR has modeled performance information on 
different stack configurations which will help with stacking distance.

I really don't have a lot of options  as my tower will be guyed at 3 
points, 47', 87' and 127'.  Based on the manual and the work WN9O did, 
40' stacking distance is probably the best bet for the C31's. I'll mount 
them at 48', 88' and 128'.  That will leave me 10+ feet to mount a 40m 
yagi and possibly a rotating dipole for 80/75.

Rich - N5ZC

On 2/23/2015 1:43 PM, Richard Thorne wrote:
> I've been following the mail on this subject.
>
> I'm going to start my new tower this summer.  The base and anchors are 
> already in.  It's going to be a 137' rotating 55g tower with three F12 
> C31XR's stacked.
>
> I've been using HFTA to come up with the best compromise heights 
> (compromise as I'm trying to get the best results on all 3 bands).
>
> Then it dawned on me.  Should I be worried about stacking results or 
> individual heights.  Isn't the height of an antenna for a specific 
> band at a certain time of day more of an advantage than the combined 
> stacking?, and of course it's still a compromise since we're talking 
> about tribanders.  Don't get me wrong, I'm still going to try to come 
> up with the best stacking distances for my location, but it seems to 
> me that the most important feature of a stack is having 3 different 
> heights to choose from, isn't it?
>
> I sure wish the project was finished, it would have come in handy this 
> past weekend.
>
> Rich - N5ZC
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