[Elecraft] softrock with K3

[Jerry Flanders]

Any recommendations for a "high-reverse isolation buffer" circuit?

Jerry W4UK

At 02:19 PM 12/23/2007, Lyle Johnson wrote:

>PLEASE remember that you *must* have a high-reverse isolation buffer 
>between the K3 IF OUT jack and the Softrock antenna input.  The 
>Softrock may have a huge spur at its carrier frequency and its mixer 
>may not suppress this adequately.  So there is a potential coupling 
>problem (mixer) and radiation problem (shielding).  The IF out of 
>the K3 does not have high reverse isolation characteristics, so you 
>need to ensure you do not couple a signal at the IF *into* the K3 
>through this connector.
>
>73,
>
>Lyle KK7P