[TowerTalk] Ultrabeam

[WA3GIN]

What caught my eye was the way they mounted the trust bearing on the 
crank-up mast.  Looks like three solid rods that connect the rotor mount 
plate to the thrust bearing plate....taking the side moment stress off the 
rotor housing.  That has always been a concern for mast users who didn't 
want to rotor the entire tower from the base fixture.  Pretty novel 
implementation.

73,
dave
wa3gin
----- Original Message ----- 
From: "Mike" <nf4l at nf4l.com>
To: "jim Jarvis" <jimjarvis at optonline.net>
Cc: <towertalk at contesting.com>
Sent: Friday, April 18, 2008 10:01 PM
Subject: Re: [TowerTalk] Ultrabeam


>I *REALLY* want to see the 4el 6-80!! Not that I could afford the
> antenna, or the land it would shade.
> 73
> Mike NF4L
>
> jim Jarvis wrote:
>> Looks for all the world like a contravention of the SteppIR patent,
>> although I haven't
>> researched it to be sure.    There appear to be some mechanical
>> improvements over
>> the Mertel brothers' design, but an awful lot is simply a copy.
>>
>> There is flattery, and then there is thievery.    The question is
>> whether there's enough
>> money at stake for the Mertels to challenge this ripoff.
>>
>> Curiously,  I still have my engineering notebook from 1975, signed
>> and witnessed,
>> which describes this antenna.   The moving elements were the easy
>> part.   Control was
>> the economic block.   It was the availability of PIC controllers
>> which made it
>> feasible as a commercial product.
>>
>> I suppose if one could go to the trouble of creating a replica of a
>> dead sea scroll, or
>> the shroud of Turin,  one could create an engineering notebook
>> documenting prior
>> design and protection under italian law.    Or, maybe it really exists.
>>
>> One certainty:   At EU1600,  I'm not buying one!
>>
>> N2EA
>>
>>
>> Jim Jarvis, MBA
>> President-Executive Coach
>> The Morse Group, LLC
>>
>> People-Process-Strategy
>> Achieving Results in a Changing World
>> www.themorsegroup.biz
>> coach at themorsegroup.biz
>>
>>
>>
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>
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