Smart thinking! Though using two receivers for this may be quite difficult to implement. They have to be *exactly* identical to obtain phase cancellation. That means AGC timing, roofing filter ripple, signal path gains, everything. I think this will be hard with the K3 and SubRX.
The outboard noise-cancellation boxes have a much shorter/simpler and wider signal path, making cancellation easier. It may also be a better place to do this at the front-end and not at the back-end of a receiver. It would be a nice experiment though! How about just phase reverting the SubRX audio temporarily and give it a try? 73' Paul PD0PSB 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. > > Thoughts? > > -- > 73 -- Brian -- K1LI > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > > -- View this message in context: http://n2.nabble.com/K3-new-feature-idea-question-tp3977080p3979212.html Sent from the Elecraft mailing list archive at Nabble.com. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
