[600MRG] QEX Noise Canceller

[Brian Pease]

One of the 2 antennas must have a better s/n than the other, otherwise 
the desired signal will be cancelled out with the noise. Using an 
identical "noise" antenna helps keep the noise waveform the same for 
better cancellation.

On 3/30/2015 2:59 PM, Kenneth G. Gordon wrote:
> On 30 Mar 2015 at 17:59, Marshall Cross wrote:
>
>> Then why not use the same antenna with a splitter?
> Hmmm....that makes sense...sort of....to me, but I am most certainly not an
> expert on such things either. Perhaps some separation between the
> antennas, even if small, is needed in order to achieve a necessary phase
> difference. I may ask Mike about it.
>
> BTW, I was wrong on the value of the reduction in noise level that Mike
> achieved with his unit: instead of a 25 dB reduction in noise, it was actually
> a measured 31 dB reduction in noise.
>
> I thought that was.....adequate... ;-(
>
> Ken W7EKB
>
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