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Here you will find the information/results on YU7EF duo band 6,4m  6+7elm yagi with 12mm elements on the same 6m long boom .

Pop Have on he's web www.yu7ef.com a 5 elm 4/6m duaband Yagi  made of taper elements. I ask Pop to make another design, with a 6m long boom and 12mm Alu tubing,  he was so kind to provide me with this information after some days of calculations, Thanks Pop for taking your time !

 Here is data of YU7EF Pop 6 elm(50Mhz) and 7elm(70Mhz) 4+6m douband with 12mm Alu tubing

 

YO4FYQ have build the antenna and result after 1 day use seams to be okay.

Here a pic's of YO4FYQ duoband

 

 

LA4ANA has also build the antenna.

Here a pic's of LA4ANA 4m/6m duoband

 

 

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