[Elecraft] KPA-1500 power reading ?

[Ed Stallman]

The KPA1500 is new to me and very happy with my purchase . I'm using the 
LP-100A watt meter and comparing it with the KPA-1500 they both read 
close enough 10 to 160 . On 6m I'm seeing a bigger spread  with the 
LP-100A reading 1500w the KPA-1500 is showing 1375w . If you look at 
this in DB , it's nothing. I know the LP-100A is very accurate and the 
only way to know for sure is to have Larry at Telepost test it. Most 
likely wont do wont do that. Are their others that see a difference on 6m ?

Thanks Ed N5DG