[Elecraft] W2 Wattmeter

[Don Wilhelm]

Sorry, 10 watts below should have been 20 watts for my example.  I hope 
everyone got the point despite my error.

73,
Don W3FPR

Don Wilhelm wrote:
> 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
>>   
>>
>>     
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> ------------------------------------------------------------------------
>
>
> No virus found in this incoming message.
> Checked by AVG - www.avg.com 
> Version: 9.0.725 / Virus Database: 270.14.124/2597 - Release Date: 01/02/10 03:22:00
>
>