[Elecraft] K4 noise blanking

Wes wes_n7ws at triconet.org
Wed Jul 31 17:39:29 EDT 2019


Thanks Wayne,

Sounds good.

Wes

On 7/31/2019 12:26 PM, Wayne Burdick wrote:
> Wes,
>
> The HD model will include per-receiver hardware noise blanker modules, similar 
> to a dual-receive K3S.
>
> All models will have enhanced DSP-based blanking, supplemented by fast-pulse 
> blanking in the FPGA, which is similar to the function of hardware blanker.
>
> And yes, the UI will be simplified.
>
> Wayne
> N6KR
>
> ----
> elecraft.com <http://elecraft.com>
>
> On Jul 31, 2019, at 10:20 AM, Wes <wes_n7ws at triconet.org 
> <mailto:wes_n7ws at triconet.org>> wrote:
>
>> Since the basic K4 is direct sampling, I don't see there being a hardware 
>> blanker.  On the other hand, the "HD" will be superhet with crystal 
>> filtering. Crystal filters delay and stretch noise pulses, making subsequent 
>> software blanking less effective.
>>
>> So, my first question is, will there be a hardware blanker ahead of the 
>> crystal filtering and will there be some delay in the signal path to 
>> compensated for time delays in the noise channel?
>>
>> Second, with there be enough "smarts" in the blanking system so an operator 
>> doesn't have to wade through 400+ settings?
>>
>> Wes  N7WS
>>
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