ABBREE AR-771C GMRS (SMA-Female) vs Nagoya NA-320A (Tri-Band)

The ABBREE AR-771C is the clear winner for GMRS-specific use. It delivers legitimate 5/8-wave performance at 465 MHz with realistic gain around 3.1 dBi, making it purpose-built for the job at hand.

The single most important differentiator is electrical length efficiency. The AR-771C achieves near-optimal electrical length on its target band, while the Nagoya NA-320A compromises significantly on VHF, where it operates as a quarter-wave stub at 146 MHz with minimal gain. The Nagoya's claimed 3.5 dBi gain is overstated given its actual electrical performance across the band mix.

The AR-771C is the logical choice for dedicated GMRS operators who want straightforward performance at a rock-bottom price. The Nagoya NA-320A makes sense only if you genuinely need tri-band coverage across VHF, 1.25m, and UHF and can tolerate weak performance on 2 meters.

For GMRS-only use, buy the ABBREE. You get superior electrical design, better gain, and save twelve dollars. The Nagoya's tri-band versatility doesn't justify its cost when you're locked into a single primary frequency.