E9B07 — Amateur Extra Class

E9B07 : What is the difference in radiated power between a lossless antenna with gain and an isotropic radiator driven by the same power?
A The power radiated from the directional antenna is increased by the gain of the antenna
B The power radiated from the directional antenna is stronger by its front-to-back ratio
C They are the same
D The power radiated from the isotropic radiator is 2.15 dB greater than that from the directional antenna
Correct Answer: They are the same