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Re: [VHFcontesting] Cushcraft 13B2 Match

To: Jerry <jer.sieg@shaw.ca>
Subject: Re: [VHFcontesting] Cushcraft 13B2 Match
From: David Pruett <k8cc@comcast.net>
Date: Wed, 29 Sep 2010 23:11:06 -0400
List-post: <vhfcontesting@contesting.com">mailto:vhfcontesting@contesting.com>
This would be very difficult to implement mechanically.  A Beta-Match 
(also called a hairpin match) requires a split driven element (insulated 
from the boom and split into two halves like a dipole).  The 13B2 driven 
element is one continuous piece of aluminum tubing, with T-match bars 
connected by straps to the driven element.

The driven element would have to be split and an insulated mount 
fabricated which will be rugged enough to hold the whole thing 
together.  Not an easy task.

Dave/K8CC


Jerry wrote:
>   What you could try.. is Hy-Gains 'Beta-match' as they call it for the 
> 214.. fairly similar in size to the CC.. may take a bit of experimenting 
> to get the proper match for you.. unless you can find someone who had a 
> 13B2 take a fall..and only have the CC Matching stuff you need..?  Good 
> Luck..
> Hy-Gain 214 Manual at link below;
> http://www.hy-gain.com/man/pdf/VB-214FM.pdf
> Jerry VE6CPP
> DN39or
>
> On 9/27/2010 12:58 PM, Mike Benonis wrote:
>   
>> I've looked at the manual, but all it does it tell me to install the 
>> UltraMatch box.  What I need to do is build a replacement matching network 
>> for it, and the manual does not have a schematic for it unfortunately.
>>
>> Mike KI4RIX
>>
>>
>> On 27 Sep 2010, at 11:05 , stanley thimm wrote:
>>
>>     
>>> Go to the MFJ/Cushcraft site and download the manual pdf.
>>>
>>> 73, Stan VA3ST
>>>
>>>
>>> On Sat, Sep 25, 2010 at 12:28 PM, Mike Benonis<mailinglists@benonis.net>  
>>> wrote:
>>>       
>>>> Does anyone have experience building a custom match for the Cushcraft 13B2 
>>>> antenna?  I recently got one, but it was missing all hardware and the 
>>>> match (basically, it came with boom and elements only, including the DE 
>>>> with the T-match pieces parts).  I feel like it should not be hard to 
>>>> build the match but I don't know what the balanced feedpoint impedance is 
>>>> supposed to be.
>>>>
>>>> Thanks and 73 de Mike KI4RIX
>>>>
>>>>
>>>>
>>>> Best regards,
>>>>
>>>> Mike Benonis
>>>> mike@benonis.net
>>>> KI4RIX
>>>>
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>>>>         
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>>     
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