Bingfu 42.5-inch Foldable Tactical (SMA-Female) vs Nagoya NA-771G (GMRS)

The Nagoya NA-771G is the clear winner for GMRS use, scoring 91 to the Bingfu's 73 overall.

The decisive factor is electrical length. The Nagoya operates at 0.60 wavelengths on GMRS, achieving a realistic 3.1 dBi gain through proper 5/8-wave design. The Bingfu's 42.5-inch length creates a problematic multi-wavelength configuration on UHF at 1.57 wavelengths, yielding negative gain of -1.0 dBi. While it does work decently on VHF as a half-wave at 0.53 wavelengths, it's a compromise antenna across bands.

The Bingfu suits operators needing a dual-band solution on a shoestring budget, particularly for VHF where its half-wave performance is respectable. The Nagoya is purpose-built for GMRS users who want reliable performance from a compact, affordable package.

Buy the Nagoya if you operate primarily on GMRS or need a single antenna that performs well. Buy the Bingfu only if you must cover both VHF and UHF cheaply and accept mediocre UHF performance. For serious GMRS work, the Nagoya's superior electrical design at a modest price premium makes it the straightforward choice.