porky69
DX-pert
Registered: 04-2008
Location: 27.555 (usb)
Posts: 773
Karma: 6 (+6/-0)
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Re: Homebrew pics
looks very well made
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7/Oct/2015, 12:38 pm
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mikecharlie
Freebander
Registered: 03-2015
Posts: 34
Karma: 0 (+0/-0)
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Re: Homebrew pics
Thanks, in the process of fine tuning it.
swr is at a 1.7...1.8 at present on 27.555.
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8/Oct/2015, 9:25 pm
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mikecharlie
Freebander
Registered: 03-2015
Posts: 34
Karma: 0 (+0/-0)
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Re: Homebrew pics
I spent a few hours over the last week working on this antenna.
Firstly i shortened the strap between the element and the gamma rod and this brought the antenna down to a 1.4 swr from 2.0.
I need to lengthen the elements by approx 30mm to get it dead on 27.555 but as it stands its perfectly usable.
i also isolated the elements from the boom, but connected the director element to the cold side of the pl socket.
I spotted that vortex do this and decided to see if it would help.
i would like to get a trimming capacitor and see if i can adjust it via that.
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9/Oct/2015, 6:30 pm
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topbuzzuk
Big Cheese
Registered: 11-2007
Location: Wiltshire, UK
Posts: 2655
Karma: 12 (+12/-0)
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Re: Homebrew pics
these antennas all look well made, good job 
---
26FB118
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13/Oct/2015, 5:18 pm
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mikecharlie
Freebander
Registered: 03-2015
Posts: 34
Karma: 0 (+0/-0)
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Re: Homebrew pics
Cheers pal.
I'm in the process of making a second hb9cv.
I made this one slightly differant, the gamma rod runs above the element and i mounted a jb to house the capacitor and the feed point.
I just have to cut the elements to size and test it all out.
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17/Oct/2015, 10:23 pm
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yamanx1
Head Honcho
Registered: 09-2007
Location: In a world of my own
Posts: 4883
Karma: 38 (+39/-1)
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Re: Homebrew pics
Very tidy
I'll be enlisting your knowledge when I start my build of an LFA yagi
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By all means think yourself big, but never think others small.... R.F.Scott |
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20/Oct/2015, 8:09 am
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