Given the increased noise levels most hams face, I emailed Wayne to ask if improved noise reduction & noise blanking were on their project list. He said no. So, any improvements are apparently a long way off.
John WA1EAZ > On Jan 14, 2019, at 7:29 AM, Wes Stewart <wes_n...@triconet.org> wrote: > > Lyle is retired here in Tucson. > > Wes N7WS > > On 1/14/2019 3:00 AM, Bill W4ZV wrote: >> David Gilbert wrote >>> Yes, I agree that the computation needs to be done in the frequency >>> domain with an FFT. I have no clue whether or not the K3 and K3s have >>> enough computational power to do so, but Lyle (Elecraft's DSP guru) >>> briefly discussed this idea with me when I suggested it several years >>> ago and he seemed to think it might be feasible. At the time the K3 >>> synths wouldn't preserve lock when you changed frequency so it wouldn't >>> have been very practical back then, but the new synths are fed by the >>> same oscillator now. >> You asked a good question Dave. I recall Lyle telling me the same years ago >> (where is Lyle anyway...buried in K4 firmware?). I've used the NCC-1, >> MFJ-1025 and ANC-4 over the years to phase parallel staggered Beverages. >> This is probably beyond the processor in the K3 but it remains a good idea >> to investigate for the K4. The downside to phasing two identical antennas >> internally is that you must give up diversity. Using the NCC-1 output for >> one input to the K3 diversity and a different antenna for the other allows >> both simultaneously (but for two different purposes). >> >> I'm afraid the market for users who want to do this sort of thing may be >> small, but clearly there is a decent market for noise canceling devices. >> BTW noise canceling boxes ONLY work well for canceling a single local noise >> source which requires a nearby sense antenna for one input (groundwave only >> since propagation introduces constantly shifting relative phase changes). >> >> 73, Bill W4ZV >> >> P.S. The bottom 2 plots in the link below show what can be done by phasing >> two parallel staggered Beverages: >> http://users.vnet.net/btippett/new_page_10.htm > > ______________________________________________________________ > 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 > Message delivered to jstengrev...@comcast.net ______________________________________________________________ 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 Message delivered to arch...@mail-archive.com
