What is your DC voltage? The KX1 specification is 3-4 watts with 12 volts, so you are close to the spec right now. If you have an antenna analyzer, check you dummy load to be certain it is the same 50 ohm pure resistive load on both bands. Your wattmeter may also be frequency sensitive - many are.
Yes, look at the toroids and the capacitor values in the LPF. Don't push the power too far - the LPF componentscan be stressed with power level much over 4 watts (that depends on the SWR). 73, Don W3FPR On 4/23/2012 1:11 PM, AC8JW wrote: > I have just assembled s/n 2626 and have found low power output. Mine is a two > band version with no options. With a bench supply, I get 4 Watts on 20M and > 3 Watts on 40M into a dummy load. This measured with an electaft W1. I will > look again at my LP toroids, but looks like I may need to do the power mod. > > > > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
