[TowerTalk] OptiBeam OBDYA12-5 and NN4ZZ TiltPlate

[Art Greenberg]

Thanks Jon, but the OB9-5HD isn't the antenna in question.

The XR5 is a nice antenna but based on advertised performance, its not 
in the same class as the OBDYA12-5.

-- 
Art Greenberg
WA2LLN
art at artg.tv


On 9/17/24 07:42, Jon Zaimes, AA1K wrote:
> DXE has the manual: 
> https://static.dxengineering.com/global/images/technicalarticles/dbo-ob9-5hd-p.pdf?_gl=1*1i6yvzt*_gcl_aw*R0NMLjE3MjY1NzI2OTAuRUFJYUlRb2JDaE1JeHFiY3V2REppQU1Wd2t0X0FCMmlTQ190RUFBWUFTQUFFZ0tfbF9EX0J3RQ..*_gcl_au*NTkwNzUxMTc1LjE3MjY1NzI2ODk.*_ga*MTkzMDI1NjAxOC4xNzI2NTcyNjkw*_ga_NZB590FMHY*MTcyNjU3MjY4OS4xLjAuMTcyNjU3MjY4OS42MC4wLjA. <https://static.dxengineering.com/global/images/technicalarticles/dbo-ob9-5hd-p.pdf?_gl=1*1i6yvzt*_gcl_aw*R0NMLjE3MjY1NzI2OTAuRUFJYUlRb2JDaE1JeHFiY3V2REppQU1Wd2t0X0FCMmlTQ190RUFBWUFTQUFFZ0tfbF9EX0J3RQ..*_gcl_au*NTkwNzUxMTc1LjE3MjY1NzI2ODk.*_ga*MTkzMDI1NjAxOC4xNzI2NTcyNjkw*_ga_NZB590FMHY*MTcyNjU3MjY4OS4xLjAuMTcyNjU3MjY4OS42MC4wLjA.>
> 
> <https://static.dxengineering.com/global/images/technicalarticles/dbo-ob9-5hd-p.pdf?_gl=1*1i6yvzt*_gcl_aw*R0NMLjE3MjY1NzI2OTAuRUFJYUlRb2JDaE1JeHFiY3V2REppQU1Wd2t0X0FCMmlTQ190RUFBWUFTQUFFZ0tfbF9EX0J3RQ..*_gcl_au*NTkwNzUxMTc1LjE3MjY1NzI2ODk.*_ga*MTkzMDI1NjAxOC4xNzI2NTcyNjkw*_ga_NZB590FMHY*MTcyNjU3MjY4OS4xLjAuMTcyNjU3MjY4OS42MC4wLjA.>Or consider the similar XR5 from JK Antennas, which has wide gap in middle to allow for side mounting or in your case tilt plate. And round boom, no adapter needed. Great support too.
> 
> https://jkantennas.com/xr5. <https://jkantennas.com/xr5.html>
> 
> 
> 73/Jon
> 
> 
> Jon P. Zaimes, AA1K
> 
> Tower climber for hire
> 
> http://www.aa1k.us/ <http://www.aa1k.us/>
> 
> 
> Reviews of AA1K tower work on eham website: 
> http://www.eham.net/reviews/detail/12922 
> <http://www.eham.net/reviews/detail/12922>
> 
> */Hug your favorite tower every day, and always stay connected to it./*
> 
> 
> On Thursday, September 12, 2024, 12:19 PM, Art Greenberg <art at artg.tv> 
> wrote:
> 
>     I'm considering buying the subject antenna. I want to mount it on an
>     existing NN4ZZ TiltPlate.
> 
>     The old NN4ZZ site shows an adapter for the OptiBeam square booms. In
>     this case, the boom is 40mm square and a 2.5-inch OD aluminum tube is
>     used as an adapter. That's all good. I can fabricate the adapter or
>     puchase it pre-made if it is available from Degen Designs.
> 
>     But I have questions about this particular antenna. Will the adapter
>     clear the phasing lines that run under the boom sufficiently? Does the
>     element spacing around the nominal center of the boom allow for the
>     18-inch TiltPlate? Will the elements nearest the mast clear the
>     tower as
>     it is tilted over?
> 
>     OptiBeam does not make the antenna manual available without purchase,
>     and dimensional information that would answer my questions is not
>     available from OptiBeam (I did ask).
> 
>     Does anyone here have this antenna and can provide the dimensions
>     that I
>     need? Even better, has anyone attempted to mount this antenna to a
>     TiltPlate?
> 
>     Thanks.
>     -- 
> 
>     Art Greenberg
>     WA2LLN
>     art at artg.tv <mailto:art at artg.tv>
> 
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