[Elecraft] softrock with K3

[Dave Martin]

We'll have to get some ideas for a simple buffer that will provide
good isolation.  Otherwise before long questions will be popping up
about spurious responses and noise with our new K3s.


On Dec 23, 2007 2:19 PM, Lyle Johnson <kk7p at wavecable.com> wrote:
> > Any one have any experience with the softrock and the K3...
>
> 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
>
>
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