Hi Ed. The W1 DC voltage calibration resulted with incorrect reading with my W1. My hunch is that components have changed since Elecraft established the TP1 DC calibration voltage almost a decade ago.
I have a KX3F with unchanged factory power calibration. Based on comments from Wayne, the KX3 is calibrated at 7.0 watts. My W1 TP1 voltage is 4.812 using a Fluke 87V Setting up a test bench with KX3 -> W1 -> DL1 Using W1 Utility to display W1 power: http://www.elecraft.com/software/W1/elecraft_w1_software.htm TP1 V = 4.812 KX3 power = 7.0 W W1 power = 7.02 DL1 V = 12.91 = 6.93 watts The W1 20 dB directional coupler does absorb power, at 7 watts, the directional coupler will absorb 0.07 watts. Adding 0.07 to the DL1 measurements equals 7.00 watts. John KN5L ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
