[WVDXA] 6 M Beam

Clark L. Stewart w8tn at ntelos.net
Fri Jul 11 20:06:06 PDT 2008


Charlie,

      Wow, that's great!   Hope the finalizing of the job all go smoothly 
for you.

      Here is a link to my 4-L yagi instructions.  You could check the 
tubing size on it and see if it is close.  It is just a 12-foot boom but 
that should get you in the ball park.

http://www.directivesystems.com/PDF/DS50-4.PDF

      I think the 6-M band died today but that is the way it works.  Maybe 
tomorrow it will be back.

      Let me know when you have it operational.  I'll be glad to give you a 
signal check or anything else I can do to help with your project.


Clark, W8TN



At 02:54 PM 7/11/2008 -0500, you wrote:
>Although technically I don't retire until July 31, as of yesterday I 
>completed (hopefully) the last of my transitional activities at work, and 
>can concentrate on other things now.  The only thing remaining to do is 
>drive to Cleveland and box up my papers.  Good excuse to visit AES one 
>more time next week.
>Clark:  I will call them to see if they will replace or copy the HFTA CD 
>that I broke from the Antenna Book.  I heard zip back from ARRL; guess the 
>wrong people were asked.
>
>I knew there was an antenna (yagi) here that was never assembled. Sometime 
>or other, it came in a trade.  Thought it was a small 3 el 10M, but it 
>turns out to be a 12-4CD Cush Craft, which is a 4 el 12M yagi on an 18' 
>boom.   The box was dry rotted and tossed, but I think the hardware is all 
>there. I am sorting it out now. I found the manual for it.
>
>If I can figure out the element lengths with the tubing taper, this should 
>work on 6M.  My thought is to do the driven element first, adjust it to 
>resonance with the MFJ 259, then scale the reflector and directors from 
>that.  It uses a gamma match.  Should be able to modify that to work as well.
>
>Anybody have any alternative ideas as to the best way to adjust this thing 
>for 6?   My antenna book had a program to calculate element lengths 
>considering taper, but the CD got broken.
>
>I would appreciate any suggestions.   Yes, I could (and likely will) buy a 
>M2 6M7JHV, but this thing is here, I have no interest in 12M, and I should 
>be able to throw this together this weekend.  I would like to hear a JA on 
>6M! HFTA says 10' will work great overlooking my steep hillside.
>
>73, Charlie N8RR
>




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