Amateur Extra › E9 Antennas and Transmission Lines › E9A08
E9A08
Which frequency band has the smallest first Fresnel zone?
Pick an answer to check it.
Answer: A. 5.8 GHz
Fresnel zone size shrinks as wavelength gets shorter. The highest frequency listed, 5.8 GHz, has the shortest wavelength and the smallest zone.
Tip: Higher frequency, smaller Fresnel zone.