Comet CA-2X4SRNMO Dual-Band Mobile vs Retevis Heavy-Duty Fiberglass GMRS Mobile

The Retevis edges out the Comet, but your choice depends on what you're operating.

The critical difference is bandwidth. The Comet covers both VHF and UHF in one antenna, delivering respectable half-wave performance on 146 MHz (3.5 dBi) and acceptable multi-wavelength gain on 435 MHz (5.4 dBi). The Retevis is single-band GMRS only, but commits fully to that mission with 1.9 wavelengths of electrical length yielding genuine 6.3 dBi gain at 465 MHz. That extra length and focused design give it a real performance advantage where it operates.

The Comet costs ten dollars more for its versatility, which matters if you need both bands on one vehicle. The Retevis is cheaper and stronger in its lane if GMRS is your primary interest.

Buy the Comet if you operate both 2-meter and 70-centimeter and want a single mobile antenna. Buy the Retevis if GMRS is your main focus and you want maximum gain from a budget-friendly platform.

The Retevis gets the edge here for what it delivers in its niche, but the Comet's dual-band flexibility makes it the smarter choice for most operators juggling multiple bands.