[Elecraft] Diode Matrix for Band Out on K3

[Don Wilhelm]

  Lee,

Unless you are only trying to decode a few bands, I would find the 
decode very difficult (if not impossible) without the use of inverters 
to provide both a true and an inverted output for each of the band 
outputs.  It is much easier to use a 4 to 16 de-mux chip like the 
74HC154.  One will do 160 through 6 meters and another (with an inverter 
from ACC pin 7 can decode the transverter bands as well.

73,
Don W3FPR

On 10/7/2010 5:30 PM, Lee Buller wrote:
>
>
> Has anyone worked out the diode Matrix for the output of the K3 Band0 through
> Band3?  I am stumbling through the logic here....and well...it has been many
> years since I thought about a diode matrix.
>
> Any figured this out yet?  Did a quick search on Google and found most people
> are using the Elecraft product....but I have a specific idea in mind and need to
> figure the diode matrix.
>
> Lee - K0WA
>