[Elecraft] K3, diversity and noise reduction

[dmb at lightstream.net]

Tony,

I strongly recommend the DX Engineering NCC-1 for noise cancellation:
< http://www.dxengineering.com/parts/dxe-ncc-1 >

It is very effective at nulling out offending noise sources -- BUT, it
will do so for only one source at a time. You may find that nulling out
one of your sources will frequently be enough, depending upon the
direction of your yagi at the time.

I've had one for about three years, and wouldn't want to be without it.

73, Dale
WA8SRA

>
> I have been watching some youtube clips showing how by adjusting the phase
> and amplitude of two received signals on a diversity receiver local noise
> can be reduced by more than 20db.
> This would be particularly useful to me as I have the dirtiest plasma TV
> on one side of me and a gaggle of cheap ADSL routers on the other. When
> pointed at them with my yagi the noise floor on 20-15m is over S7.
>
> The equipment used in the clip was the ANAN 100D SDR.
> Is anyone aware if this technique is possible using the K3 dual receivers?
> I have not found any place in the manual where it is possible to alter the
> phase of the secondary or primary signals.
>
> Thanks for reading this
>
> Tony VK4CH