Most SWR meters accurately read 1:1 with a 50-ohm resistive load but may not read accurately at higher SWR. That normally isn't a problem: when you're tuning an antenna you are aiming for lowest SWR. The exact SWR isn't important as long as it is minimum.

Alan N1AL


On 02/23/2018 06:34 AM, Roger Meadows via Elecraft wrote:
I decided to do a spot check on SWR readings on my antenna with my KX3 after I 
tuned it with a MFJ 259C. The results were different between the two devices.
The MFJ on the lower bands read a significantly higher SWR than the KX3.
I guess my question is which would you trust, the MFJ or the KX3? The reading 
make a difference on how I will tune my antenna. Or do I need to get a third 
meter in the mix and go 2 out of 3?


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