Bingfu 42.5-inch Foldable Tactical (SMA-Female) vs Retevis RHD-771 (SMA-Female)

The Retevis RHD-771 is the clear winner for most users, despite costing half the price of the Bingfu.

The critical difference is band suitability. The Bingfu performs well on VHF at 0.53 wavelengths (half wave, 2.6 dBi), but severely underperforms on UHF at 1.57 wavelengths, delivering a realistic negative 1.0 dBi. Its claimed 3.5 dBi gain is overstated. Conversely, the Retevis struggles on VHF as an electrically short 0.19 wavelength antenna with negative 1.0 dBi, but excels on UHF at 0.57 wavelengths with realistic 2.9 dBi. Its claimed 2.15 dBi is honest and supported.

The Retevis's UHF performance and lower price make it the practical choice for most dual-band handheld radio operators, where UHF coverage is typically the priority. Buy the Retevis RHD-771 if you want reliable dual-band performance without overpaying. Buy the Bingfu only if you operate primarily on VHF and need the foldable design for portability. For general use, the Retevis delivers better value and more realistic specifications.