You explained the beam better than I did. but it is quite nice. I
can't weight until I get my beam up on the 48 foot tower, now it is
up about 20 feet.
I am going to have a 2 meter beam about 4 feet under the hex beam.
Mike
KD2CDUAt 05:03 AM 8/23/2014, you wrote:
> Colin,
>
>Picture it as an upside down umbrella. The support cords that go from
>the tip of each spreader to the top of the center post, pull the
>spreaders up like the ribs of an umbrella. Again upside down.
>
>The wire elements are one piece units: Half the driven element for a
>particular band, followed by a Kevlar cord spacer, followed by the full
>length reflector, followed by another piece of cord, followed by the
>second half of the driven element. Each element wire attaches to the
>center post, comes out spreader 1 to it's first clip, then circles the
>remaining spreaders to spreader 6, where it returns back to the other
>lug on the center post for that band. Since there is a third dimension
>(height) to this antenna, each lower frequency band element circles the
>spreaders not only further out from the center, but also slightly higher
>on the bowed up spreaders. The highest band (6 meters in this case)
>circles the center just a couple of feet from the center and attaches to
>the lowest lugs on the post. The lowest band (20 meters) circles the
>spreaders near their bowed up tips, and attaches to the highest lugs on
>the center post (maybe 3 feet higher than the 6 meter lugs.
>
>
>I'm no engineer, and can't swear this is true, but supposedly the fact
>that the thing is symmetrical helps in the wind. Also 27 pounds isn't
>light when standing on a step ladder with it balanced on your shoulder
>and trying to feel for the top of the rotor.
>
>
>73, Steve KW3A
>
>
>
>
>
>
>On 8/23/2014 4:15 AM, Colin McDonald wrote:
> > yeah, I just read the instructions in about 5 mins and it was one of the
> > best written instruction sheets I've ever read.
> > No engineer speak or electro/mecho garble lol.
> > Still don't have a full picture in my mind of how the thing looks
> when fully
> > assembled...but like anything else, not too hard to figure out
> once you have
> > all the parts in front of you...it helps that they're all properly cut and
> > fitted.
> > I'm thinking of a hex beam at my QTH due to very limited lot width and the
> > turning radius seems like it would be perfect.
> > It can also go at the top of a mast and wouldn't require a tower
> > necesarily...though it's quite heavy and does have a pretty
> significant wind
> > load even compared to some 3 or 4 element beams.
> > I think my a4s is only rated at 7 square feet of wind load and it's a large
> > antenna.
> >
> > 73
> > Colin, V A6BKX
> > --------------------------------------------------
> > From: "Steve Forst" <[log in to unmask]>
> > Sent: Friday, August 22, 2014 3:40 PM
> > To: <[log in to unmask]>
> > Subject: I've been Hexed
> >
> >> No witchcraft involved, but just put up a Hex beam to replace the short
> >> boom 2 element tri bander. I put it together yesterday and got it up on
> >> the mast this morning. Just under 15 feet right now. I don't think I'm
> >> going to extend the other section until I have some sighted help to
> >> help me get the thing guyed while keeping it vertical.
> >>
> >> SWR is super on the 5 HF bands, but resonant point is a bit high in the
> >> band on 6 meters.
> >>
> >> This one came from NA4RR, one of the many purveyors of this type of
> >> antenna. Parts seem to be good quality and with everything pre
> >> measured and pre cut, it's easy enough to put together with your eyes
> >> closed (so to speak).
> >>
> >> 73, Steve KW3A
> >
> >
> >
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