I don't think that I would put a 20 foot mast on top of a crank up tower!
What type of mast do you plan to use? Aluminum, Molly etc?
I have that same tower and it would worry me with that high of a mast
especially when tilting it over. A lot of stress there.
73
Gary K4FMX
> -----Original Message-----
> From: TowerTalk [mailto:towertalk-bounces@contesting.com] On
> Behalf Of David Winarsky
> Sent: Monday, November 23, 2020 8:18 AM
> To: Dick Williams
> Cc: towertalk@contesting com
> Subject: Re: [TowerTalk] Cut off extra 7 ft of mast or leave it?
>
> Thanks everyone for all the great comments and advice! It
> sounds like a lot of people have a similar setup and are
> actually utilizing the extra space space. I wasn’t sure the
> extra length of mast would be stable enough to hold another
> antenna on its own, but based on this thread I’ll plan to put
> a 3 feet of the mast in the tower (with the rotator plate 3
> ft down as Karl advised), put the Steppir a few feet above
> the top of the tower, and the JK40 all the way at the top.
>
> By the way, one additional question I forgot to ask— I had
> been advised to rotate the JK40 90 degrees from the Steppir
> to avoid interaction between the two antennas. Do you folks
> advise the same?
>
> Thanks again,
> David K6ZD
>
> > On Nov 22, 2020, at 21:51, Dick Williams
> <richardk8ztt@gmail.com> wrote:
> >
> >
> > Dave,
> >
> > If you are not planning on stacking another antenna on the
> tower, why not move the 40M dipole up higher and utilize the
> additional 7 ft to get the 40M rotatable dipole a bit higher
> up? That tower seems to have similar specs to my old US
> Tower HDX-54 that I have had up close to 20 years. Like
> yourself, I have a 20 ft mast and the rotor (Tailtwister) is
> mounted in the tower with 3 or so feet of mast in the tower.
> I use the tower to hold two Force 12 Magnum antennas. One is
> a 7 element 12 M beam about 1 ft above the top of the tower,
> and the other is an 8 element 10 M beam about 3 ft from the
> top of the mast (the U Bolt and saddle that holds the truss
> cable for the 10M beam is at the top of the mast). I live on
> top of a hill, and have had winds in excess of 70 MPH on more
> than one occasion.
> >
> > Have fun erecting the tower. For the first time since I
> erect it, I had to do some maintenance last week, and it was
> sure nice to be able to lower it down!
> >
> > Dick, K8ZTT
> >
> >> On Sun, Nov 22, 2020 at 9:38 PM Gary K9GS
> <k9gs@gjschwartz.com> wrote:
> >> I'd have to study this a bit more but why not put a 3 ele
> 6m beam at the top and stack with the DB11 on 6m?73,Gary K9GS
> >> -------- Original message --------From: Raymond Benny
> <rayn6vr@gmail.com> Date: 11/22/20 10:23 PM (GMT-06:00) To:
> wesattaway@bellsouth.net Cc: Tower Talk
> <TowerTalk@contesting.com>, David Winarsky
> <david@winarsky.com> Subject: Re: [TowerTalk] Cut off extra 7
> ft of mast or leave it? You paid big bucks for a good mast.
> 7ft sticking up won't hurt a thing.Besides, you may want to
> add another antenna in the future.Ray,N6VR/W7YAOn Sun, Nov
> 22, 2020, 7:56 PM Wes Attaway <wesattaway@bellsouth.net>
> wrote:> I would leave it in place because someday you might
> want to put a vertical> up there.>>
> -----------------------------------> Wes Attaway
> (N5WA)> (318) 393-3289 - Shreveport, LA> Computer/Cellphone
> Forensics> AttawayForensics.com>
> -----------------------------------> -----Original
> Message-----> From: TowerTalk
> [mailto:towertalk-bounces@contesting.com] On Behalf Of>
> David> Winarsky> Sent: Sunday, November 22, 2020 8:39 PM> To:
> TowerTalk@contesting.com> Subject: [TowerTalk] Cut off extra
> 7 ft of mast or leave it?>> I'm putting up my first tower, a
> LM-354HDSP with a Steppir DB11 and a JK 40> meter horizontal
> dipole, both in the same mast. I have a 20 ft 2 in OD mast>
> from Tashjian and am wondering whether I should cut off the
> unused length> or> leave it?>> Karl at Tashjian suggested I
> install the rotator plate 3 ft below the top> of> the tower
> and the DB11 2 ft above the top, with the JK40 8 ft above
> that> (10> ft from the top of the tower). That will leave 7
> ft of the mast unused.>> Do you folks recommend I leave the
> extra 7ft of the mast in place or cut it> off?>> Appreciate
> the input and any other comments or suggestions on my plan.>>
> 73,> David K6ZD>
> _______________________________________________>>>>
> _______________________________________________> TowerTalk
> mailing list> TowerTalk@contesting.com>
> http://lists.contesting.com/mailman/listinfo/towertalk>>
> _______________________________________________>>>>
> _______________________________________________> TowerTalk
> mailing list> TowerTalk@contesting.com>
> http://lists.contesting.com/mailman/listinfo/towertalk>_______
> ______________________________________________________________
> _________________________TowerTalk mailing
> listTowerTalk@contesting.comhttp://lists.contesting.com/mailma
> n/listinfo/towertalk
> >> _______________________________________________
> >>
> >>
> >>
> >> _______________________________________________
> >> TowerTalk mailing list
> >> TowerTalk@contesting.com
> >> http://lists.contesting.com/mailman/listinfo/towertalk
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
>
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|