I asked this before, but didn't get an answer, so I'll try again: does the +/- 0.5 db accuracy of the W1 mean 0.5 db of full scale, or 0.5 db of the reading? So if I am measuring a 5 watt signal, is that 0.5 db of 5 watts or 0.5 db of 14 watts? -- 73, Vic, K2VCO Fresno CA http://www.qsl.net/k2vco