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

The Retevis RHD-771 is the clear winner here. Despite costing half the price, it delivers better performance where it matters most: UHF, where it reaches near 5/8 wave electrical length versus the NA-701's quarter wave. This translates to roughly 2 dB of real-world gain advantage on 435 MHz, a meaningful difference for handheld work.

The single most important differentiator is electrical length on UHF. The RHD-771's 391 mm design edges closer to optimal 5/8 wave performance, while the shorter NA-701 falls short at quarter wave. On VHF both antennas are electrically short and compromised, but this band is secondary for most handheld operators.

The NA-701 makes sense only if you need a genuinely compact antenna where 203 mm is the deciding factor. Buy the RHD-771 if you want the best balance of cost, size, and practical UHF performance from a single antenna.

The Retevis RHD-771 is the antenna to buy. It costs less, performs better on UHF, and scores higher. Unless portability demands the smallest possible package, there's no reason to choose the NA-701.