On 30/08/2013 9:21 a.m., Iain MacDonnell - N6ML-2 [via Elecraft] wrote:
>
> That seems to suggest that your custom cable is defective - maybe it's
> shorting the keying line (pin 10) to something else and interfering
> with the K3's key output.

The cable is not defective - I checked continuity carefully.
>
> Just to be sure .... you have *both* RCA cables in place through all
> of these scenarios, right? 
Yes, both RCA cables are in place, as before I made the new cable.

Thanks for your suggestions Iain.

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