We closed my dad's photo studio in 1981, so it would
have been before that. I have nothing that old in my
personal photo collection - I had to off load a LOT of
stuff when I lost my house in the mortgage crash
(imagine compressing a 3 bedroom house into a
mobile home. Something has to give).
I'd ask Scala if they have any engineering drawings
on the design you'd be interested in.
The design that my friend was interested in was a
4-bay corner reflector. You could look in the ARRL
antenna handbook or any of the other antenna
engineering books for corner reflectors. All they
are is a dipole carefully spaced in a 90 degree reflector.
Then extend the design to a reflector 4 (or even 8) dipoles
high and put 4 dipoles in the appropriate positions.
Mike WA6ILQ
At 10:49 AM 06/01/10, you wrote:
You still have those photos? I wouldnt mind looking into building my own
kc7rjk
Ross
-----Original Message-----
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of Mike Morris
Sent: Monday, May 31, 2010 7:43 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Heavy Duty Antenna question....
At 10:07 AM 05/31/10, you wrote:
>well, i tried to search, but.. alas, sorting thru 1400+ posts just
>isn't going to work.
>
>i need actual use facts on high altitude (>11k feet), severe duty
>antenna selection... i've always been a stationmaster (fiberglass)
>antenna guy - and never had a problem... but...i've never put an
>antenna up at this height.
>
>i am going to need something good for 150+ MPH winds, ICE, etc.
>
>Open to ideas.
One word: Scala. They are in Medford, Oregon.
Phone 541-779-6500
Email is communications at kathrein dot com
Kathrein-Werke KG of Germany bought them but
everyone I know of still calls them Scala.
The Cal Tech Seismo Lab has a bunch of radio linked
seismographs and one is on Mt Whitney at 14,500 feet.
Another is on Mount San Antonio (also known as Mt Baldy)
at over 10,000 feet.
Those plus a lot more seismographs at lower altitudes all
use Scala beams.
Now those are beams but I've seen Scala Omni antennas as
well. They are TOUGH.
In short, Scala make antennas that survive, but they are not
cheap.
<<http://www.kathrein-scala.com/>http://www.kathrein-scala.com/> main web site
<<http://www.kathrein-scala.com/vhf-high.htm>http://www.kathrein-scala.com/vhf-high.htm>
VHF High Band
<<http://www.kathrein-scala.com/uhf-mobile.htm>http://www.kathrein-scala.com/uhf-mobile.htm>
UHF
Despite the words "uhf mobile" they make UHF station antennas as well.
I'd get their catalog, as well as the ones from Sinclair and
Telewave and maybe even Bogner. Just be sitting down when
you get to pricing out your new toy.
Years ago a friend could not afford the Scala he wanted, so
he took lots of photos of one that was already in place at a
different site. Those photos were blown up to 8x10s (I had
access to an enlarger and a darkroom then) and he took
them over to his brother-in-law the welder.
A couple of weeks later he had a homebrew copy of a Scala
VHF Omni with a reflector (think 8 foot tall corner reflector)
A trip to the galvanizers and then to the mountaintop resulted
in a very LOUD system....
Mike WA6ILQ
