ABBREE AR-771C GMRS (SMA-Female) vs ABBREE 48.8-inch Foldable Tactical (SMA-Female)

The AR-771C is the clear winner for GMRS use on a handheld radio. Its 389 mm length delivers a proper 5/8 wavelength electrical match at 465 MHz, yielding realistic performance of about 3.1 dBi. The claimed 2.15 dBi is conservative but honest. The tactical antenna's single most critical flaw is that it simply doesn't work well across its entire range. At VHF it performs like the AR-771C, but at UHF its 1.80 wavelength electrical length creates a deep null in the radiation pattern, resulting in negative gain around minus 1 dB. The claimed 6 dBi gain is overstated by approximately 2.9 dB and reflects no real-world measurement.

The AR-771C suits anyone wanting reliable GMRS performance on a handheld without compromise. The tactical antenna appeals only to operators who primarily work VHF and can tolerate poor UHF performance, which limits its utility severely.

Buy the AR-771C for straightforward GMRS work where it excels. Skip the tactical antenna unless you operate almost exclusively on VHF and accept that you are paying extra for multiband capability that actually degrades performance on UHF.