[AMRadio] Tower Construction


Jim Wilhite w5jo at brightok.net
Sun Jun 13 21:45:39 EDT 2004


Larry:

That is good news about Rohn.  They have always made a quality product.

The 25 series had the fold over option, of course, but the HB series could
be cranked over.  One would have to have a support pole with a winch and it
hinged on two of the legs to lower it.  The lowering was horizontal not
vertical.

I had my set up this way and it worked just fine.  The legs were fitted with
thick walled pipe and one removed the bolts on one of the legs, then one of
the bolts on the other two legs.  With proper cable and a winch, you could
lower the tower.

I hope to have mine back in operation soon.  I have a Mosley TA-53M on top
with a Hygain 400 rotor.  The rotor plate was, of course, and option and
bottom mounted.  They had that plate back when the rotor was manufactured by
Hygain.  Sure has been through a lot of storms and both have survived.  I
have the HBDX 40 and would like to add the next section, but that would
require changing the leg supports and saddles for the fold over.

If I remember right, the 25 series catalog recommended only about 25 ft.
above a house bracketed with about 6-8 sq. ft. of antenna maximum, but that
is poor memory talking.  As Brian mentioned they can be loaded much more
than that and survive.

Glad they are back.

73  Jim
de W5JO


----- Original Message ----- 
From: "Larry Saletzki" <wa9vrh at mtco.com>
To: <bcarling at cfl.rr.com>; "Discussion of AM Radio"
<amradio at mailman.qth.net>
Sent: Sunday, June 13, 2004 7:28 PM
Subject: Re: [AMRadio] Tower Construction


> Hi Brian,
> I am happy to report that Rohn and their products are not dead. A company
> called Radian bought out Rohn.
> See: http://www.rohnnet.com/   for more information. The best news is they
> are restarting the old Rohn manufacturing plant in the Peoria, Il. area.
If
> I remember correctly someone else bought out Rohn's galvanizing facility
> here in the Peoria area. (I believe it was someone from the Chicago area
but
> could stand to be corrected)  So Radian is having this company do their
> galvanizing. (again this could stand to be corrected)
> This link will take you to the original Rohn catalog:
> http://www.rohnnet.net/rohnnet2004/html2004/index.html
>
> Hope this helps.   How many of you remember that Rohn made a crank up
> tower?? I was interested in buying one a few years ago but when I called
> Rohn they would not admit having built one. I finally got some
documentation
> on the one I was interested in. It was not rated very high for windload
for
> it's size so I passed on it. Later I acquired a number of old QST's that
had
> a number of ads in them for Rohn crank ups. They must have had some
serious
> issues with them.
> 73 Larry WA9VRH
>
> ----- Original Message -----
> From: "Brian Carling" <bcarling at cfl.rr.com>
> To: "Discussion of AM Radio" <amradio at mailman.qth.net>
> Sent: Sunday, June 13, 2004 5:11 PM
> Subject: Re: [AMRadio] Tower Construction
>
>
> > I know that with the Rohn 25G they recommend no more than three sections
> > without guys.  Not sure on the 55G, but it might be on someone's web
site.
> >
> > I heard Rohn went out of business which is a D&*n shame,
> > in my opinion. They were a great company that has supplied
> > great products for decades. Someone is probably now selling
> > a cheap Chinese imitation made out of recycled pot metal
> > and retailing for 90% of the Rohn price!
> snip>
>
>
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