Jim, if you calibrated the K3 Wattmeter with a low reading Wattmeter it would give the symptoms you describe. The calibration is optional and calls for an accurate Wattmeter, the K3 already comes calibrated from the factory. You might have a fault, K3 Support will be able to assist.
I use the supplied cable and obtain good correlation to the expected power at 5 and 50 Watts, but slightly less at 100 Watts. There is a table of the results at: http://www.astromag.co.uk/k3/ I've never had an over current warning. 73 Dave, G4AON K3/100 #80 --------------------- Exactly 100 watts set on K3. Measured about 90 watts out on two external watt meters. One on an MFJ antenna tuner and the other is a high end MFJ power meter. They agree within a couple of watts near 100 watts measured. Have a good day and 73. Jim, W0EM ______________________________________________________________ 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