RadioRanked verdict
Updated Nov 2026Comet SBB-224NMO Tri-Band Mobile vs Retevis Heavy-Duty Fiberglass GMRS Mobile
Our pick
Retevis Heavy-Duty Fiberglass GMRS Mobile$79.99
The Retevis Heavy-Duty Fiberglass wins this comparison. Both antennas deliver honest gain figures backed by their electrical lengths, but the Retevis operates at 1.90 wavelengths on GMRS while the Comet spreads its performance across three bands with no single band reaching optimal length. The Retevis achieves 6.3 dBi realistic gain versus the Comet's best of 5.0 dBi on UHF. The single most important differentiator is specialization: the Retevis commits its 1224 mm length entirely to GMRS performance, while the Comet's shorter 914 mm frame forces compromises across VHF, 1.25m, and UHF.
Price favors the Retevis at $75.99 against the Comet's $99.99. Owner ratings are essentially tied, with the Retevis backed by 146 reviews at 4.5/5 and the Comet by 27 reviews at 4.6/5. The Retevis scores 70 to the Comet's 65, reflecting its stronger specifications and lower price.
Buy the Comet SBB-224NMO if you need flexible tri-band capability for simultaneous VHF and UHF work. Buy the Retevis if you focus on GMRS and want maximum gain per dollar. For single-frequency mobile work, the Retevis is the stronger choice.
By use case
Which should you buy?
Budget-conscious GMRS-only buyer
Costs less and delivers better GMRS performance for a buyer who only needs that band.
Retevis Heavy-Duty Fiberglass GMRS MobileOne-antenna 2m, 220 and 70cm operator
Covers VHF, 1.25m and UHF on one whip, which the GMRS-only model cannot reach.
SBB-224NMOVehicle owner needing garage clearance
Its shorter 914mm length clears low garage doors better than the 1224mm rigid whip.
SBB-224NMOFixed GMRS install where reach matters
Its longer electrical length delivers stronger GMRS reach on a fixed install where clearance is not a concern.
Retevis Heavy-Duty Fiberglass GMRS MobileGMRS operator working distant repeaters
Its longer electrical length gives a stronger signal at GMRS frequencies for distant repeater access.
Retevis Heavy-Duty Fiberglass GMRS Mobile
Reasons to choose Comet SBB-224NMO Tri-Band Mobile
- Also covers VHF (146 MHz)
- Also covers 1.25m (223 MHz)
- Lower profile by 12.2 in (914 mm vs 1224 mm)
Reasons to choose Retevis Heavy-Duty Fiberglass GMRS Mobile
- 20% cheaper ($79.99 vs $99.99)
- Also covers GMRS (465 MHz)
Spec battle
Spec-by-spec breakdown
Made your choice?
Comet SBB-224NMO Tri-Band Mobile
$99.99 on AmazonRetevis Heavy-Duty Fiberglass GMRS MobilePICK
$79.99 on AmazonMore head-to-heads

