Lee,
Thanks for the tip. This is what "reflectors" are all about. I never even
considered this as a potential problem but it makes very much sense.
Lane
Kilo MIke Three Gulf
Sunny San Diego
John 3:16
----------
> From: Lee Buller <k0wa@southwind.net>
> To: towertalk@contesting.com
> Subject: Re: [TowerTalk] Water pipe
To: <towertalk@contesting.com>
> Date: Monday, November 10, 1997 11:10 PM
>
> At 08:46 AM 11/11/97 +200, you wrote:
> >K5GO wrote:
> >> If I am stacking antennas such as my little Cushcraft 2 Element 40
which
> >> is about 10-12 Ft above a 4 Element 20, I'll telescope a Schedule 40
> >> 1.00" galvanized water pipe inside the 1.5" one and drill and pin them
> >> near the top with 1/2 inch bolt.
> >
> >That's EXACTLY what I did with my 402BA (2 el Shorty Forty) above a
> >205BA (5 el 20 short boom) for several years, without a problem. I
> >moved the same tower to the new station, this time with a C3
> >tribander below the 40. Within six months, a storm had bent the mast
> >about 30 degrees, just where it leaves the thrust bearing. It was a
> >bitch to fix!
> >
> >Bottom line: On my new tower I went for the real stuff.
> >
> >Chris R. Burger
> >ZS6EZ
>
> The issue I have with this senario is drilling the mast. I have done
this
> in the past, but if I had my druthers, I would never...never...never pin
a
> mast if I could help it. I don't care how tight you drill the hole, or
how
> hard the bolts are...the wind moving the beam around will wallow out the
> holes and the whole thing will get loosy goosy. Once you get a degree of
> arc (slop) in the mast, you will take out your very expensive rotor.
Just a
> warning...cause it has happened to me.
>
> Lee
> k0wa@southwind.net
>
>
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