Comparisons K3S/KX3/K2 etc?

[Rhulett]

I hadn't been paying too much attention, guess the K3 has been replaced by
the K3S.  Owning a K2/100, am thinking about an "upgrade".  Is there a
simple chart comparing the attributes of these three radios?  Looking at the
receiver comparison charts on Elecraft site, am not seeing the KX3 listed.

72, Curt KB5JO


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[Phil Wheeler-2]

All three are on this Rob Sherwood chart, Curt:
http://www.sherweng.com/table.html

73, Phil W7OX

On 9/3/15 6:19 AM, Curt wrote:
> I hadn't been paying too much attention, guess
> the K3 has been replaced by the K3S.  Owning a
> K2/100, am thinking about an "upgrade".  Is
> there a simple chart comparing the attributes of
> these three radios?  Looking at the receiver
> comparison charts on Elecraft site, am not
> seeing the KX3 listed.
>
> 72, Curt KB5JO

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[Phil Wheeler-2]

As a follow up it's interesting to speculate where
this Icom-7300 would end up on the Sherwood chart.
And how would it prevail in a strong-signal
environment, like Field Day or an urban area like
the one I'm in? Based on what I've seen it will be
OK for casual operating and SDR "dabbling", but
not for serious operators who contest, work DX or
want to play at Field Day. For those uses the
K3/K3S will blow it away.

In fact, given the KX3 design, I wonder how it and
the Icom-7300 will stack up against one another.

It will be interesting to see some IC-7300 numbers
-- including the price!

73, Phil W7OX

On 9/3/15 7:59 AM, Phil Wheeler wrote:

> All three are on this Rob Sherwood chart, Curt:
> http://www.sherweng.com/table.html
>
> 73, Phil W7OX
>
> On 9/3/15 6:19 AM, Curt wrote:
>> I hadn't been paying too much attention, guess
>> the K3 has been replaced by the K3S.  Owning a
>> K2/100, am thinking about an "upgrade".  Is
>> there a simple chart comparing the attributes
>> of these three radios?  Looking at the receiver
>> comparison charts on Elecraft site, am not
>> seeing the KX3 listed.
>>
>> 72, Curt KB5JO

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[vk2rq]

The Rob Sherwood chart is sorted by narrow spaced dynamic range (second last column). K3S is at 107dB, KX is at 104dB, and K2 appears twice, 80dB for the new model and 70dB for the older model. I presume if you apply the mod kits to an older model K2, it will bring the performance up near where the newer K2s sit.

Rob mentioned in one of his presentations that for CW you need a better receiver that for SSB, and that ideally you want at least 80dB narrow-spaced dynamic range when working weak CW stations in crowded contest conditions with strong stations nearby. An up-to-date K2 meets this criteria, but the FT991 is quite a but further down the chart at 71dB. Don’t know where this Icom IC7300 will fit in, but I think, like the Flex radios, it is a direct-sampling SDR architecture, and it will be very interesting to see where it ends up.

-- 
73 de Matt VK2RQ

Le 4 septembre 2015 à 12:59:38 AM, Phil Wheeler ([hidden email]) a écrit:

All three are on this Rob Sherwood chart, Curt:  
http://www.sherweng.com/table.html 

73, Phil W7OX  

On 9/3/15 6:19 AM, Curt wrote:  
> I hadn't been paying too much attention, guess  
> the K3 has been replaced by the K3S. Owning a  
> K2/100, am thinking about an "upgrade". Is  
> there a simple chart comparing the attributes of  
> these three radios? Looking at the receiver  
> comparison charts on Elecraft site, am not  
> seeing the KX3 listed.  
>  
> 72, Curt KB5JO  

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[Wes (N7WS)]

I own both an "original" K3 and "new" K3S. I would suggest snapping up one of
the several original K3s now going on sale by owners who have upgraded.

Wes  N7WS

  On 9/3/2015 6:19 AM, Curt wrote:
> I hadn't been paying too much attention, guess the K3 has been replaced by the
> K3S.  Owning a K2/100, am thinking about an "upgrade".  Is there a simple
> chart comparing the attributes of these three radios?  Looking at the receiver
> comparison charts on Elecraft site, am not seeing the KX3 listed.
>
> 72, Curt KB5JO
>


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