Hi Stewart, I have just noticed this with mine as well. Did you ever get to the bottom of the problem? Andy VK4KY -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-Odd-SWR-readings-ANT1-v-ANT2-tp5169157p5765493.html Sent from the [K3] mailing list archive at Nabble.com.