[TowerTalk] Rohn tower 25g bracketed specs

[K8RI]

On 4/1/2012 8:03 PM, jcjacobsen at q.com wrote:
> Yo,
>
> Dave is looking for answers for his soon to be moved/bracketed tower:
>
>
> <snip>
> Hi guys, I'm in the process of relocating my 35' freestanding Rohn 25G tower
> after 8.5 years on the air.
> <more snip>
> 3. The specs also state that the base has to be the same 2x2x4 feet of
> concrete that was spec'ed for self-supporting and guyed towers.
>
> <end snip>
>
> Granted, Dave probably has the tower down by now AND I'm hoping that the "2x2x4 foot base" was a mistake when Dave typed it.
>
> The Rohn specs for SELF SUPPORTING 25G is 4x4x4 feet......... I can't believe no one else caught this. A base 2x2x4 feet, self supporting, would be just a tad wiggly, unless of course it was surrounded by a cacoon of concrete another 2 foot thick.

25G doesn't go very high at all self supporting so it's not going to 
take a large base.  At 40 feet it's rated at less than 2 sq ft of antenna.
AT 90 MPH it'll support 4.4 sq ft at 35 feet.   ROHN's specs really do 
call for 4 X 4 X 4' of concrete on the 25G

73

Roger (K8RI).
> Other than this, good luck with your project........ AND always do what the tower mfg says..... (was/isn't that what someone on this list always says? GRIN)
>
> Later
> 73 es GDDX
> K9WN Jake
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