[Elecraft] W2 Wattmeter

[Don Wilhelm]

Dick,

That is true, but they are often confused - furthermore with any 
resolution on a display like a bargraph, it is helpful to know to know 
if the LED illuminates just after the indicated power is reached or at 
some midpoint value.  I don't know, but I suspect that Elecraft has 
chosen to trigger the LED illuminating at the low edge of reaching that 
power.  So on a 200 watt scale with 10 watt resolution, the 80 watt LED 
would be illuminated starting at 80 watts and the next LED would not 
light until the power reached 100 watts - If the comparison meter is 
only off by a watt or two, but is reading a bit high, then yes, the 
comparison meter could read 100 watts with the W2 LED showing only 80 
watts - for this example, bumping the power up a couple watts would have 
the W2 reading 100 watts and the comparison meter reading 102 watts  - 
so it may *look* like the accuracy is bad when in fact it can be really 
good agreement - it all depends on knowing how to read the meters properly.

73,
Don W3FPR

Edward Dickinson, III wrote:
> Accuracy and resolution are two different matters.
>
>
> 73,
> Dick - KA5KKT
>   
>