[Elecraft] K2 KAT100 and BL2 questions

[Peter Connors, F5VNB]

Don

I agree that the BL2 is a true current balun using a balanced design 
that chokes common mode currents while also transforming impedances to 
ease a conjugate match - albeit one of the ratios is 1:1 - but my 
coax-through-ferrite-beads unbalanced common mode choke *only* does what 
it says on the tin without any impedance transformation, hence my quotes 
around 'balun'.
Without it, the 1.8MHz common mode noise pickup from my abject antenna 
siting is about S5/6 but with it the noise is S1/2. I leave it to the 
atu to transform complex impedance.

73, Pete F5VNB

Don Wilhelm wrote:
> Pete, Brian and all,
> 
> The BL2 *is* a current choke 'balun' - both in the 4:1 and the 1:1 
> configuration.
> 
> 73,
> Don W3FPR
>