The Comet antenna is 18" long, while the Genesys antenna is 41" long. Both antennas are omnidirectional and both antennas screw onto a SO-239 male terminal. They are both mobile antennas. The Genesys antenna has 3.5dB/6.0dB gain on 144/446 MHz with a maximum power input of 150 W. (I have a lip mount for these antennas which will be sold separately)
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