[Elecraft] K2 min. power out?

Don Wilhelm w3fpr at embarqmail.com
Fri Feb 24 17:02:16 EST 2012


Mike,

The lowest power that can be displayed is 0.100 watt.  I would not 
expect power levels below that to be consistent - there is a certain 
level below which the power level cannot be accurately controlled (it 
takes a little voltage into the sensing circuits to make the power 
control smooth.

If you are interested in milliwatting with the K2, you will find some 
helpful information in an old document by Wayne Burdick that can be 
found at http://www.elecraft.com/Apps/milliwatting_with_the_k2.htm.

Note that the referenced document refers only to RF Board D9 as the 
power sensing device.  If you have the KAT2 or KPA100 or KAT100 
installed, the power sensing circuits are in the wattmeter mechanism for 
those options and you would have to insert the gain block at a different 
place.

73,
Don W3FPR

On 2/24/2012 2:12 PM, ac5p at sbcglobal.net wrote:
> Has anyone actually measured the RF output at the lowest setting of the pot?
> My display stops at 0.100 watt but this is before the end of pot travel.  Just curious if minimum output is fixed at 100 milliwatts or goes lower? 
> Mike, AC5P
>


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