Nagoya NA-701G (GMRS) vs Retevis RHD-771 (SMA-Female)

The Retevis RHD-771 is the clear winner at 88/100 versus 76/100 for the Nagoya NA-701G, though each antenna serves different purposes.

The single most important differentiator is electrical length. The NA-701G is a quarter-wave stub at 465 MHz and performs poorly as a result, delivering realistic gain around negative 0.4 dBi despite claiming 2.15 dBi, an overstatement of about 2.6 dB. The RHD-771 is multiband: electrically short on VHF at negative 1.0 dBi, but genuinely performs as claimed on UHF where its 5/8 wavelength design yields 2.9 dBi of realistic gain. Its 2.15 dBi claim is honest and supported by its physical length.

The NA-701G is purpose-built for GMRS-only users who want a compact 140 mm option and accept modest performance. The RHD-771 suits operators working VHF/UHF bands who need a single flexible antenna that performs meaningfully on UHF and acceptably on VHF.

Buy the RHD-771 unless you specifically need a tiny GMRS-only antenna and have no UHF requirement. At under ten dollars with better electrical design, the Retevis offers significantly better value and honest performance claims.