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Re: [TowerTalk] Questions on M2 antennas...

To: "'StellarCAT'" <rxdesign@ssvecnet.com>, <towertalk@contesting.com>
Subject: Re: [TowerTalk] Questions on M2 antennas...
From: "Jorge Diez - CX6VM" <cx6vm.jorge@gmail.com>
Date: Sat, 4 Apr 2015 09:33:02 -0300
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
Hi Gary

As Bill K4XS say, the 15M6DX boom is not strong, is just .065 wall and really 
not good for a 44ft boom. 

My boom 15M6 boom broken in half where the clamps support it to the mast to 
boom plate, caused but strong winds and vibration.

Then I bought the HD boom and the antenna looks very well. 

Maybe you can add just a tube over it in the section that will be attached to 
the tower.

I have 15 mts and 20 mts M2 yagi´s. This were my first monobands yagi. After 
that I purchased antennas from G0KSC, the actual owner of Force12, and I really 
love this flat SWR antennas!  Once you operate with a flat SWR antenna across 
the ENTIRE band, you will want to have always this kind of antennas

73,
Jorge
CX6VM/CW5W


-----Mensaje original-----
De: TowerTalk [mailto:towertalk-bounces@contesting.com] En nombre de StellarCAT
Enviado el: viernes, 03 de abril de 2015 08:53 p.m.
Para: towertalk@contesting.com
Asunto: [TowerTalk] Questions on M2 antennas...

I�m thinking of a 2 stack of the M2 15M6DX. Both antennas would be mounted 
across the face of Rohn 55 (rotating tower)... unfortunately their manual 
doesn�t say what the distance is to the mast/balance point and it looks rather 
close to D2. I asked the factory what the distance was and even though its been 
in production for years � they basically said they didn�t know and didn�t have 
a CAD drawing for it! Seems very odd to me ... so instead I�m here asking if 
anyone has one of these up and if they know what the approximate distance is 
from the balance point to the closest element? 

I�m also considering a 40M4LLDD (although the comments by some about linear 
loading tend to worry me � the reviews from those that are using it are all 
positive � albeit without a direct A/B comparison we all know how relative it 
all is) ... and was wondering if anyone has one of these close to either a 20 
and/or a 15. I�m planning on ~12� from the 20 to the 40 and ~31� from the 40 to 
the top 15... looking to see if there�s any interaction at all. I can move the 
40 to a different tower with a bit more work IF indeed there is some 
interaction noted. 

Thanks to those that own one for their comments.

Gary K9RX
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