Needs work review by CyborgAlienBariaur on 11/4/2023 Has great SWR match right out of the box, got 1.0-1.3 readings the problem lies in that the Smiley Antenna Super Stick GMRS 465MHz & NOAA antenna is far superior to it for fars. I felt crippled when using the MR77. I'm glad it finally made it to me but, if fars are what you're looking for, check out other offerings. It does well for close by traffic around town though if you only need to get out a few miles. No difference on battery or plugged into a stable power source. Needs no grounding.