K4 noise blanking

[Wes Stewart-2]

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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[wayne burdick]

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

> On Jul 31, 2019, at 10:20 AM, Wes <[hidden email]> 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
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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> Post: mailto:[hidden email]
>
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> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]

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[Wes Stewart-2]

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 <[hidden email]
> <mailto:[hidden email]>> 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
>>
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:[hidden email]
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to [hidden email] <mailto:[hidden email]>

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