I just looked at a photo and was I suprised to see that you are correct,
the elements are loaded right at the boom. Isn't this the least
efficient spot for a loading coil?
John KK9A
On 2017-03-28 10:25, Billy Cox wrote:
> In this case John, it is necessary as I believe that model uses center loaded
> elements there at the boom to element mount, so he will need to follow Stan's
> and your advice advice and and locate something a bit more robust perhaps.
>
> Hope this helps!
>
> 73 de Billy, AA4NU
>
> -------------------------
>
> FROM: john@kk9a.com
> TO: TowerTalk@contesting.com
> SENT: Tuesday, March 28, 2017 5:34:34 AM
> SUBJECT: Re: [TowerTalk] Mosley S-402
> I have no personal experience with Mosley. It is not necessary to insulate
> the parasitic elements however doing so makes calculating the lengths much
> easier as there is no boom/bracket compensation. Also the boom resonance
> is easier to calculate should you have multiple antennas in various
> directions. Direct mounting will likely require some tip length changes.
> You can purchase insulating material at McMaster Carr and other places
> should you wish to fabricate new heavier duty insulators or you can use
> Stauff clamps or possibly DX Engineering element brackets.
> John KK9A
>
> To: TowerTalk@contesting.com
> Subject: [TowerTalk] Mosley S-402
> From: Tom Martin <tmartin@chartermi.net>
> Date: Mon, 27 Mar 2017 16:17:47 -0500
>
> For the second time I've had a broken element support issue. The first
> time a F1 tornado came through and I lost half of the reflector. A few
> weeks ago, a 45 mph wind gust took off half of the driven element. Those
> insulator blocks have failed each time right at the coil to element
> connections.
> Does anyone know where I can get ideas as to how to bag the little blocks
> and still have the elements insulated from the boom? Also, I see that my
> Mosley CL-33 doesn't have the director and reflector insulated from the
> boom. I thought that if the driven element was insulated from the boom,
> all elements had to be the same.
> Thanks.
> 73, Tom W8JWN
> _______________________________________________
>
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