Hi Steve, I recently purchased 2 Btech, (bao feng) radios GMRS V1 mod #. Using a tram 1170 mag antenna tuned to 1.1 to one. I measured their output using a MFJ874 swr/pwr meter. This meter has proven itself reliable. These radios are sold as 5 watt radios, but the spec sheet says <5 watts. First radio measured 3.0 watts. 2nd radio measured 2.7 watts, while technically not a lie [ < 5 watts] I thought I was buying 5 watt radios.