Dual band 6m-4m Yagi


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Last week I installed a new beam for the 4m band, I used same boom of 6jxx6, six elements for 6m from Sandro I0JXX
The 6jxx6 data are available on I0JXX’s website.
Simulation and optimization have been made with nec2 engine, main goal was do not interfere with 6m pattern and impedance, this was possible with a little loss of gain on 4m band versus other monoband antennas with same boomlenght.

MEASURES

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