[TowerTalk] More from the M2 antennas quality control file

[Jorge Diez - CX6VM]

Hello 

Of course that they will solve any problem, and mostly with new antennas

Many years ago, 2 weeks before a major contest, we assembled the 20M5. The
insulator for the driven element was wrong, didn´t fit inside the tube!

They sent immediately the right one. And courier to Uruguay is not cheap

Anyway, they will save a lot of many checking carefully what they are
putting inside the box and shipping

73,
Jorge
CX6VM/CW5W






-----Mensaje original-----
De: TowerTalk [mailto:towertalk-bounces at contesting.com] En nombre de Chuck
Dietz
Enviado el: lunes, 13 de abril de 2015 10:53 a.m.
Para: Jim Lux
CC: towertalk at contesting.com
Asunto: Re: [TowerTalk] More from the M2 antennas quality control file

I have a number of M2 antennas and I have only had one problem.  I called
them and they corrected it immediately by shipping the correct part.  I have
difficulty believing they won't correct a mistake they made.  I did call
them about mistakes in parts supplied with one of my 9 element 6 meter
beams, but it turned out I was misreading the directions and all the parts
were correct.

Chuck W5PR

On Mon, Apr 13, 2015 at 8:26 AM, Jim Lux <jimlux at earthlink.net> wrote:

> On 4/13/15 5:37 AM, Patrick Greenlee wrote:
>
>> I'm not a Yagi guru or an EZNEC modeler. Can someone tell me what 
>> 1/16 of an inch in element length means in performance parameters in 
>> the example below?  I have done mostly wire antennas and 1/16 or 1/8 
>> didn't seem to make much difference.
>>
>>
> this is a 432 MHz antenna with a lot of elements where the elements 
> are about a foot long overall.
> 1/16" if it's on both sides, is shortening the element by about 1%
>
> The element lengths are critical to getting low side/back lobe 
> performance, although it doesn't change forward gain very much.
>
>
> As you note, on something like a dipole, a change of a few percent 
> doesn't change the performance all that much.
>
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