[Elecraft] KAT2 Power Calibration

[Kirby J. Davis]

Hello,

In finishing the KAT2 kit this morning everything appears to be=
 going 
well. However, in the "Power Calibration" section I'm having some=
 
trouble but it may be because I just don't have an accurate 
wattmeter.

I'm trying to use a Radio Shack 21-534 Power/SWR meter to set the=
 
power calibration. However, with the K2 set at 5 watts and R1 and=
 R2 
set fully clockwise I'm showing about 9 watts on the RS meter and=
 5.0 
watts forward/0.0 watts reverse on the K2 display. Any adjustment=
 
counterclockwise on R1/R2 just lowers the value shown on the K2 
display.

Do I need to worry about anything? Am I going to have to purchase=
 
something like the Oak Hills Research WM-2 wattmeter kit so that=
 I 
can correctly set the K2 or should I just get close with the RF 
probe/DMM alternative method?

If I should go the RF probe method is this referring to the RF=
 probe 
built during the K2 construction? Also, I'm not quite clear on=
 the 
instructions for using this alternative method (described on page=
 17 
of the KAT2 manual)... could anyone clarify the procedure for=
 me?

Thanks!

.. Kirby