Overall length is NOT always King. For VHF air, I have a 19" signal stick antenna which is better that the original Icom IC-R15 antenna, however, the much shorter 6" smiley rubber duck for airband blows the 19" signal Stick, especially for the twr & gnd control freqs, as well as ATIS. Currently, the best antenna by a long shot for me on the Icom IC-R15 is the Smiley antenna