HYS-771N Dual-Band Whip (SMA-Female) vs TIDRADIO TD-771 GMRS (SMA-Female)

The HYS-771N is the clear winner for dual-band use, but the choice depends on your radio's frequency range.

The critical difference is electrical efficiency across bands. The HYS-771N delivers a respectable 5/8-wave performance on UHF at 2.9 dBi, though it suffers on VHF where it's electrically short at only 0.19 wavelengths, yielding a realistic -1.0 dBi. The TD-771 is purpose-built for GMRS at 465 MHz, where it achieves genuine 5/8-wave characteristics and 3.0 dBi gain. Its claimed 2.15 dBi is honest. The HYS-771N's claimed 2.5 dBi overstates its VHF capability significantly.

Buy the HYS-771N if you operate dual-band VHF/UHF radios and can accept compromised VHF performance for the sake of a single antenna. Buy the TD-771 if your radio is GMRS-only or GMRS-capable, since it optimizes for that frequency with no trade-offs.

The HYS-771N scores higher overall because dual-band versatility matters to most handheld operators, but neither antenna excels at everything. Match the antenna to your actual radio's frequency coverage first.