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Post by aardvark on Aug 19, 2019 13:30:09 GMT -5
Does anyone have the plans for a 6 element beam with a 40ft boom? Or long boom? I have the parts and could build a 6 element at 32 ft or a 7 element with a 40 ft boom. But I would like to build a 6 element with 40 ft boom. Anybody?
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Sandbagger
Administrator/The Boss 
Posts: 6,247 
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Post by Sandbagger on Aug 19, 2019 17:26:08 GMT -5
Does anyone have the plans for a 6 element beam with a 40ft boom? Or long boom? I have the parts and could build a 6 element at 32 ft or a 7 element with a 40 ft boom. But I would like to build a 6 element with 40 ft boom. Anybody? Google is your friend. Look for the instruction manuals for the Maco 105 or 107 and all the dimensions will be included. |
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Post by aardvark on Aug 19, 2019 18:40:13 GMT -5
Hi Sandbagger I have those installation instructions already. They are 32 ft boom for 6 elements I am wanting to build a 6 element with a 40ft boom. I have searched the net with no Results for a 6 element 40 ft boom. Was hoping someone had one.
thanks.
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Sandbagger
Administrator/The Boss
Posts: 6,247
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Post by Sandbagger on Aug 20, 2019 17:07:58 GMT -5
Hi Sandbagger I have those installation instructions already. They are 32 ft boom for 6 elements I am wanting to build a 6 element with a 40ft boom. I have searched the net with no Results for a 6 element 40 ft boom. Was hoping someone had one. thanks. There are ham radio antenna sites which have designs for various yagis. There was even an element calculator floating around somewhere, where you put in your design parameters and it would spit out the correct element lengths and spacing. Usually there are 3 primary performance optimizations for yagis. You can optimize for best forward gain, best front:back rejection, or maximum bandwidth. Naturally, which ever category you choose, the others will be less than optimal. Keep on googling, you'll find them. |
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Post by aardvark on Aug 20, 2019 18:20:28 GMT -5
Sandbagger thanks for pointing that out I will certainly do that.
more to come
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Post by ytradio on Aug 23, 2019 8:14:08 GMT -5
There are better designs now, but yagi's used to be built with all elements equally spaced. Driven element cut to frequency length, reflector 5% longer, and director 5% shorter. All directors can be the same length, or each one shorter than the last one. This will work, and worked well for years. I like a hairpin match vs. a gama match, it is simpler to build and works very well.
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