Video Asylum

Nice link! dBd vs dBi

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AbeCollins

In Reply to: RE: Interesting Antenna Link - Relative strengths of some... posted by mpathus on May 22, 2008 at 16:00:31

And for those who want to know the difference between dBd and dBi:

dBd is the gain of the antenna vs a dipole antenna.

dBi is the gain of the antenna vs an isotropic point source that radiates perfectly in all directions. Picture a sphere surrounding the point source. There is no perfect isotropic point source radiator. This is theoretical.

0 dBd is often considered equal to 2.15 dBi

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