The value of K will vary with the particular harmonic. Considering that the slots are about 0.075 meters apart, This table indicates two things: (1) the slots are more than one wavelength apart for the harmonics which essentially means multiple lobe patterns for the harmonics that would significantly reduce the gain; (2) it would be fortuitous if the phasing turned out to be such that one of these lobes had a maximum in the direction of the earth. We also have the condition arising where the slot length will be longer than a wavelength which would compound the above pattern affect and also modify the impedance parameters. An estimate for the K factor as a function of the harmonic is
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