[Elecraft] (K3) SWR Consistent - low or high power

[Don Wilhelm]

Randy,

What you say is true only if working into a load that is not frequency 
selective - like a dummy load.
If working into an antenna, that will be frequency selective and any 
harmonics will increase the SWR indication.

73,
Don W3FPR

On 10/10/2012 8:17 PM, Randy Farmer wrote:
> It's pretty unlikely you'd see harmonic content on any kind of broadband
> power sensor like a SWR meter. Even if the transmitter was really bad
> and had harmonic levels only 40 dB down, this would mean for 100 Watts
> output you would be getting 10 mW in harmonic energy, which wouldn't
> wiggle anybody's meter very much. And if the total harmonic power at 40
> dB down was just equal to the reflected power from your antenna
> mismatch, this would mean the antenna would have a VSWR of 1.07. My
> money's on diode nonlinearities at low power levels.
>
>