WRYW392

Someone mention about this issue when one radio is using wide band and the other narrow band check it out and let us know.

Regular GMRS applications, Simplex car-to-car and Duplex car-to-RPT. I agree with the antenna part, but based on real-world tests, there isn't much you can do to improve propagation from a car antena in 460 MHz (being very close to the ground). If anyone has conducted tests with different results, please let us know.

Considering a Wouxun GMRS radio, is there a noticeable difference in real-world car range between the 20W and 50W models?

For future readers like me: Everything explained here is indeed very accurate. Antenna manufacturers often do not provide proper data sheets or certifications to back up their claims. Some numbers, like dB, are sometimes altered for marketing purposes. An easy way to understand dB is through a water analogy: High dB is like a water pipe with a pressure nozzle - it reaches a longer distance but with less flow. Low dB is like a water pipe without a nozzle - it delivers a lot of water, but at a closer distance.