Re: K-4 features

Posted by wayne burdick on Nov 11, 2019; 4:17pm
URL: http://elecraft.85.s1.nabble.com/K-4-features-tp7656355p7656383.html

Hi Scott,

We could trigger the main RX noise blanker from the sub RX, though we haven't tried this yet. I believe this would achieve what you're describing. For example, the sub RX could be tuned to 13.975 while the main is tuned to the 20 meter CW band.

73,
Wayne
N6KR


> On Nov 10, 2019, at 7:12 PM, K9MA <[hidden email]> wrote:
>
> On 11/10/2019 19:06, Wayne Burdick wrote:
>> The K4, being an SDR, provides access to a different class of wide-band NR and NB algorithms.
>
> Some hardware noise blankers are very effective at reducing line noise and other impulse-type noise, provided there are no strong signals within the 15 kHz + NB bandwidth. (My old FT-1000D, for example.) With appropriate firmware, could the K4 NB achieve that kind of performance? Could the strong signal limitation be overcome by having the SDR detect noise in a slightly different frequency range, like just outside a ham band during a contest?


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