[Towertalk] Roof Top Tower Users?

[n4kg@juno.com]

My recommendation for installation would be to (1) install the tower,
lay it over (two legs still attached to the roof), insert the mast as
low as possible, raise the tower / mast and bolt in place.
I *assume* your mast is sufficiently sturdy to support the
proposed antennas at your county's highest rated windspeed.

(2) Raise the TOP antenna and attach to the mast.  Either climb
it up or pull it up using a pulley attached to the MAST or a Tram
system.  Do NOT use a GIN pole to raise antennas.  They are NOT 
designed to support Lateral Forces.

(3) Raise the Mast to it's final height.

(4) Raise the BOTTOM antenna and attach to the mast using
one of the above methods (see 2).

IF you want to use a KT36XA, make sure the tower and roof
will support such a large antenna.

Tom  N4KG


On Fri, 12 Jul 2002 10:27:09 -0700 "Javier Campos" <nm6e@hotmail.com>
writes:
> 
> I am on the verge of buying a roof top tower Glen Martin RT-936 or 
> Create CR-45/CR-30 for use on a peaked roof.
> 
> My particular "installation" that I am trying to nail down is one of 
> the following;
> 
> Installation Plan #1:
> 
> Force 12 C4E 
> 
> Cushcraft D4 (forr 2nd station SO2R)
> 
> Tailtwister Rotor
> 
> OR
> 
> Installation Plan #2 
> 
> M2 KT-36XA 
> 
> Cushcraft D4 (For 2nd station SO2R)
> 
> Tailtwister Rotor or Yaesu G800
> 
> Maximum Roof Height is at 25 feet, plus the tower height and 10-15' 
> mast. Overall height will be in the 40-45ft range.
> The roof tower WILL BE GUYED AT ALL 4 LEGS (Kevlar rope etc) once it 
> is all up. (underneath, the rafters will be reinforced, 2x4, 2x6's 
> etc..)
> 
> What I want to know is "how did people get the antennas up onto the 
> mast, roof top tower etc?"
> 
> Did you climb the roof top tower and "hoist" antennas up with some 
> Pully/Gin Pole system (more so for the beams, C4E or M2 KT36XA)
> 
> Some roof top tower vendors have suggested anchoring two legs onto 
> the roof then leaning it over on its side, installing everything and 
> then raising it all back up. That sounds like a lot of weight to try 
> and get vertical on a peaked roof, let alone when it all comes to a 
> sudden stop on the roof once the other two legs reach the final 
> resting spot.
> Any past experience, suggestions, comments or pictures of roof top 
> tower installations would be appreciated.
> 
> Thanks for responding.
> 
> Javier NM6E (ex-AH6MM/KJ6BK)
> 
> nm6e@arrl.net
> 
> nm6e@hotmail.com 
> 
> 
> 
> 
> 
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