[Elecraft] K3 -> Aux I/O to W9XT BCD-10 Band Decoder

[Eric Rosenberg]

I need to take the band decoder output of the K3 into a Unified 
Microsystems (W9XT) BCD-10 Band Decoder / Antenna Selector.

I'm not sire which of the K3 four outputs go to the BCD-10's four inputs.

Any help is appreciated!

Eric W3DQ
Washington, DC