Comet SBB-1NMO Compact Dual-Band Mobile vs Comet SS-460SBNMO Dual-Band Mobile

The SS-460SBNMO wins by a clear margin. The single most important differentiator is VHF performance: at 146 MHz, the SBB-1NMO is electrically short at 0.20 wavelengths and delivers only 0.7 dBi, while the SS-460SBNMO reaches a quarter wave at 0.23 wavelengths with 1.6 dBi. That's a real 0.9 dB advantage on VHF where it matters most. On UHF both antennas are nearly identical at 5/8 wave. The SS-460SBNMO's claimed 3.8 dBi is slightly optimistic given its actual electrical length, but far more honest than the SBB-1NMO's 2.15 dBi claim, which undersells what the antenna actually does. Both report strong owner satisfaction with 4.4/5 ratings. The price difference is negligible at one dollar. Buy the SBB-1NMO only if you need the compact 406 mm form factor and can live with poor VHF performance. For dual-band work where both bands matter, the SS-460SBNMO is the better engineered choice at the same price.