Hi Jim;
Well it will be close, judging from the dimensions. The rotor will fit in
Rohn 25 (no cutting diagonals needed) but the motor does protrude a bit.
>From the center line of the rotator, the maximum dimension is nearly 6.5
inches. After doing the math on a 14" triangle, from the center to the
nearest edge is only 4.04". To the point of the triangle it is 8.08". Since
you have 1.25" legs you need to subtract that PLUS the amount of the corner
of the triangle the legs can't fill - likely another .5 inch at least. If
that is less than the 6.5 inches, then no fit. To me, it looks like it
won't quite make it.
As Mitch mentioned, mounting the rotor outside on a stout mast may be an
option, depending on what antennas you wish to use. I have been testing a 6
ele 20m monobander, 48' boom (homebrew OWA design) on such an out of the
tower mount, for over 1.5 years. The antenna blew apart once (just a few
days after it went up) but the rotor was fine. We aren't in a horribly
windy area but it did survive 120 km winds earlier this winter.
73 Don
VE6JY
From: "J. T. (Mitch) Mitchell" <mitch@andor.net>
To: <towertalk@contesting.com>
Cc: "Jim Spears" <n1nk@cox.net>
Sent: Saturday, February 26, 2005 16:23
Subject: Re: [TowerTalk] alfaspid rotor in a tri-ex lm354e crankup
> Jim
>
> If the antenna is not to big. i.e. less that a 20 M mono band (4 or 5
> el) then mount the AlfaSpid on the very top of the tower then put the
> antenna on top of the rotator see the pictures at
> http://www.alfaradio.ca/r1anf.php . This is what the boys with the
> Russian Antarctic Expedition did. They have A 3 El SteppIR on the top
> of a AlfaSpid Rotator.
>
>
> Mitch /VE6OH
>
>
> Jim Spears wrote:
>
> >anybody tried this combination? can it fit inside the tower to replace a
T2X? the inside dimension of the3 faces of the inside (top) section is
about 11.5 + a bit inches (14 inches at outside, 1.25 inch tubes).
> >
> >Jim
> >N1NK
> >_______________________________________________
> >
> >See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless
Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any
questions and ask for Sherman, W2FLA.
> >
> >_______________________________________________
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> >TowerTalk@contesting.com
> >http://lists.contesting.com/mailman/listinfo/towertalk
> >
> >
> >
>
> _______________________________________________
>
> See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless
Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any
questions and ask for Sherman, W2FLA.
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
>
_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
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