ABBREE AR-771C GMRS (SMA-Female) vs Nagoya NA-771G (GMRS)

The Nagoya NA-771G is the better antenna, but the margin is thin.

Both the AR-771C and NA-771G are electrically identical 5/8 wave designs at 389 mm long, delivering the same realistic 3.1 dBi gain on GMRS. The single most important differentiator is build quality and durability. Nagoya's track record for consistent construction and longevity justifies the higher price, whereas ABBREE antennas show more variance in reliability across units.

The AR-771C's claimed gain of 2.15 dBi is understated for its electrical length, which is refreshingly honest marketing. The Nagoya's claim of 3 dBi aligns reasonably with its 5/8 wave performance. Neither antenna overstates performance egregiously.

Buy the AR-771C if you want a cheap trial antenna or don't mind potential durability issues. Buy the Nagoya NA-771G if you want a GMRS antenna that will hold up through regular field use and maintain its characteristics over time.

For most users prioritizing value and reasonable performance, the Nagoya deserves the purchase. The extra twelve dollars buys you confidence that the antenna won't fail in six months, and that margin matters on the portable.