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RadioRanked verdict

Updated Nov 2026

Comet 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 Mobile
  • One-antenna 2m, 220 and 70cm operator

    Covers VHF, 1.25m and UHF on one whip, which the GMRS-only model cannot reach.

    SBB-224NMO
  • Vehicle owner needing garage clearance

    Its shorter 914mm length clears low garage doors better than the 1224mm rigid whip.

    SBB-224NMO
  • Fixed 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 Mobile
  • GMRS 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

Comet SBB-224NMO Tri-Band MobileSpecRetevis Heavy-Duty Fiberglass GMRS Mobile
$99.99
Price
$79.99
914 mm
Length
1224 mm
6.2 dBi
Claimed gain
6.5 dBi
Supported by its length
Is that claim credible?
Supported by its length
NMO
Connector
NMO
mobile
Type
mobile
—
Flexible
No
65
Overall Score
70
+8% for winner
Black
color
Black
1
unitCount
1

Made your choice?

Comet SBB-224NMO Tri-Band Mobile

$99.99 on Amazon

Retevis Heavy-Duty Fiberglass GMRS MobilePICK

$79.99 on Amazon

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