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yagi_uda_antenna_DL6WU.php   14898 Bytes    24-07-2014 07:55:47


Yagi Uda Antenna Calculator

Based on Rothammel / DL6WU


You may want to combine it with a folded Dipole.




Yagi Uda Antenna



REQUIREMENTS


Freq. [MHz]

   

Boomlength [m]

   

Gain [dBd] (approx.)

   

Elements

      

Diameter of parasitic Elements [mm]

      

Diameter of Boom [mm]

      

Is the boom isolated from parasitics ?

    yes   no




DESIGN DATA FOR YOUR YAGI





Note : It is quite possible, that other calculators deliver slightly different results. Some are based on look-up tables, some completely hide their algorithms. We use an interpolation approach. Our results are optimised for gain, but others may be optimised for bandwidth, ... However, if the parasitics differ much from 0.4 ±0.05 * λ or the gain is larger than 16 dBd you should get distrustful.





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t1 = 3670 d

t2 = 401 ms

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