[Elecraft] K3 and phasing & noise cancelling systems

[Igor Sokolov]

I have Inv L connected to RX1 of my K3 and Hi-Z triangle connected to Aux RX 
but no canceling system. I have to do this canceling in my head and it works 
to the extend. I think, if you connect Hi-Z to one of the inputs of noise 
canceling device and some noise antenna (TX antenna for example) to another 
input, you will be able to do what you want. But then, switching the 
direction of HI-Z will require readjustment of canceling device every time 
you do that.

73, Igor UA9CDC

----- Original Message ----- 
From: "Gary Smith" <Gary at ka1j.com>
To: <Elecraft at mailman.qth.net>
Sent: Wednesday, December 18, 2013 8:58 AM
Subject: [Elecraft] K3 and phasing & noise cancelling systems


> I've been having terrible RFI issues on the low bands, sometimes its
> up to 10M but usually its from 40M & down with 160M being the most
> affected. I've become aware of the MFJ and DXEngineering phasing &
> noise cancelling systems and how well they work to null out
> interference. I'm leaning toward the DXEngineering NCC-1 although the
> price is very high and that is holding me back from buying one right
> now.
>
> I have Amtrak 100' from my Inv-L transmit and HI-Z Triangular
> antennas and Amtrak's 25KV arcing is killing me on the low bands. I'm
> wondering if anyone here has a steerable antenna system similar to
> the HI-Z that they use for Rx with their sub receiver and... one of
> the MFJ or DXE phasing/noise cancelling systems.
>
> If so, how do you have your K3 set up to handle the different systems
> and how do you connect your noise cancelling unit so as to still
> steer your Rx antenna?
>
> Thanks
>
> Gary
> KA1J
>
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