[Elecraft] KX3 Operating Tip: Determining the ATU's L/C values and L-net configuration

[Wayne Burdick]

Mike Morrow wrote:
>

> That's all it takes to compute the effective L and C values.

Good idea.

I should also have pointed out that knowing the L and C values used  
doesn't necessarily tell you what your antenna impedance is. On higher  
bands, in particular, all ATUs have strays that make them look like a  
higher-order network than just an L-net (e.g., it can be modeled as a  
pi-net in some cases). We've done some modeling of the KAT500, which  
is similar, to aid in tracking the antenna impedance. It's a very  
complex set of calculations.


> The only iffy part for a few may be converting a hexadecimal value  
> to its decimal
> equivalent.

Many scientific calculators will do this. You can also find hex- 
 >decimal calculators on the web.

73,
Wayne
N6KR