ABBREE AR-805S Stubby (SMA-Female) vs Retevis RHD-771 (SMA-Female)

The Retevis RHD-771 is the clear winner for most users.

The single most important differentiator is electrical length on UHF. At 435 MHz, the RHD-771 reaches 5/8 wavelength and delivers realistic performance around 2.9 dBi, while the ABBREE AR-805S remains severely electrically short at 0.07 wavelengths with performance around negative 4.9 dBi. That's roughly a 7.8 dB disadvantage that directly translates to weaker transmitted and received signals on UHF.

The ABBREE's claim of 3 dBi gain is overstated by about 7.9 dB relative to what its physical length can support. The Retevis, by contrast, makes a conservative claim of 2.15 dBi that aligns with its actual design. Both antennas are electrically short on VHF, so neither excels there, but the Retevis is less compromised.

The ABBREE AR-805S makes sense only for users who need maximum portability and accept severe performance tradeoffs, or those operating primarily on VHF where both antennas underperform anyway. The Retevis RHD-771 suits anyone wanting genuine UHF capability on a handheld without sacrificing practicality.

Buy the Retevis RHD-771 unless pocket space is your absolute priority over performance.