Brian Machesney wrote:
>
> I was just reading about the differing levels of success that people have
> with "active noise cancelling" units. It occurred to me that one should be
> able to achieve the same kinds of results using the second RX and separate
> antenna in the K3 - with the addition of control over the phase (delay) of
> the arriving signal. On its face, it would seem that one could achieve
> destructive interference between "the noise only" coming from a "sense"
> antenna and "the noise + signal" coming from a better receive antenna.
>
>
I own one of those units. One thought that immediately springs to mind is
that you need at least two extra controls, preferably three, one to vary the
phasing of the two signals and the others to adjust the amplitude of the two
inputs so that the noise levels cancel exactly. The K3 has no provision for
these controls.
-----
Julian, G4ILO. K2 #392 K3 #222.
* G4ILO's Shack - http://www.g4ilo.com
* KComm - http://www.g4ilo.com/kcomm.html
* KTune - http://www.g4ilo.com/ktune.html
--
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