[Elecraft] KX1 Power Measurement

[John C Ceccherelli]

My KX1 (s/n 179) at 13.6 Volts puts out the following

40M - 4.1 W
30M - 4.1 W
20M - 4.0 W

With fresh alkyline batteries it's about 1.5 watts.  Maybe a tad lower on
20 M but I haven't put a scope to it.

I have found that every watt meter I have is grossly inaccurate at some
part of the scale.  i.e, adjust it to be accurate at full deflection and
it's way off mid-scale etc.  If you have a calibrated oscilloscope or RF
voltmeter, you stand a better chance of know what your actual power output
really is.  Most people agree that the Oak Hills QRP wattmeter is accurate
but I don't have one so can't say from personal experience.

I would suggest that if you're really hung up about power output, obtain or
borrow accurate equipment to make the measurement.  SWR/Wattmeters are
usually way off particularly at QRP power levels.

N2XE

John Ceccherelli