Amateur Extra › E9 Antennas and Transmission Lines › E9A12
E9A12
How much gain does an antenna have compared to a half-wavelength dipole if it has 6 dB gain over an isotropic radiator?
Pick an answer to check it.
Answer: A. 3.85 dB
A dipole has 2.15 dB gain over isotropic. dBd = dBi - 2.15 = 6 - 2.15 = 3.85 dB.
Tip: dBd = dBi - 2.15.