Review on Enhance Your Radio's Performance with NSKI 2Pcs SRH805S SMA-F Female Dual Band Antenna for GT-3 UV-5R BF-888s Radio by Ryan Saxton

I actually bought these to increase the range of a pair of Baofeng 888 radios, but I ended up replacing the stock antenna on my UV-5R with one of these. I was impressed with the improved clarity of the signal - it became much easier to hear and understand police messages on the scanner. I can't confirm if this actually increases the range of the radio, but it definitely makes reception clearer.