[KX3] Question: KX3 and K3 Exclusive-Or ?

[Phil Hystad-3]

Is there a comparison of features in the KX3 that are different (in an improved way) then the K3?  And, is there a list of useful features of the K3 that are not in the KX3 (ignoring things like power out or current 2-meter ability)?

If anyone has such a list or can provide such information it would be appreciated?

73, phil, K7PEH

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[wayne burdick]

Phil Hystad wrote:

> Is there a comparison of features in the KX3 that are different (in  
> an improved way) then the K3?  And, is there a list of useful  
> features of the K3 that are not in the KX3 (ignoring things like  
> power out or current 2-meter ability)?


The KX3 is, generally speaking, a subset of the K3 optimized for  
ultralight, portable operation (1.5 pounds, vs. 9 to 10 pounds for the  
K3). It also adds SDR features, attached keyer paddle, and some  
additional versatility for mobile operation (such as a mic with UP/DN  
buttons, and eventually a mobile mounting bracket).

The K3 adds:

- internal 100 watt PA and ATU options

- narrow crystal roofing filters (down to 200 Hz) for
   outstanding close-in dynamic range in contest conditions

- superhet receiver with very narrow per-ham-band filters
   for the ultimate in out-of-band signal rejection; optional
   SWL-band filter modules for both main and sub

- fully independent sub receiver option with
   performance identical to main receiver, allowing
   monitoring of both TX and RX frequencies simultaneously
   with different modes and bandwidths, and a separate
   antenna input allowing independent band monitoring and
   diversity receive

- full-size front panel with convenient control of
   many additional DSP parameters, etc, and more menu
   entries for customization of operating features

- close integration with the Elecraft K-line (KPA500 amp,
   P3 panadapter, KAT500 ATU)

73,
Wayne
N6KR

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[Phil Hystad-3]

Wayne,

Thanks for the message below.  Actually, I was thinking of more subtle differences in features between the two.  I own a K3 and I will definitely be buying a KX3 (probably this Fall).  But, I watched a very nice video by Bob Nagy (AB5N) on the features of the KX3 (http://www.youtube.com/watch?v=YlH5iJKpJKk&feature=related) and it appeared that there were a number of little things that were not available on the K3.

It could be that they were merely very minor differences due to the way that the KX3 panel is different but I thought that there were a few other things that were different too.  Now, I can't specifically remember what they were so I will have to watch the video again to be more specific.

73, phil, K7PEH


On Sep 9, 2012, at 10:36 AM, Wayne Burdick <[hidden email]> wrote:

> Phil Hystad wrote:
>
>> Is there a comparison of features in the KX3 that are different (in an improved way) then the K3?  And, is there a list of useful features of the K3 that are not in the KX3 (ignoring things like power out or current 2-meter ability)?
>
>
> The KX3 is, generally speaking, a subset of the K3 optimized for ultralight, portable operation (1.5 pounds, vs. 9 to 10 pounds for the K3). It also adds SDR features, attached keyer paddle, and some additional versatility for mobile operation (such as a mic with UP/DN buttons, and eventually a mobile mounting bracket).
>
> The K3 adds:
>
> - internal 100 watt PA and ATU options
>
> - narrow crystal roofing filters (down to 200 Hz) for
>  outstanding close-in dynamic range in contest conditions
>
> - superhet receiver with very narrow per-ham-band filters
>  for the ultimate in out-of-band signal rejection; optional
>  SWL-band filter modules for both main and sub
>
> - fully independent sub receiver option with
>  performance identical to main receiver, allowing
>  monitoring of both TX and RX frequencies simultaneously
>  with different modes and bandwidths, and a separate
>  antenna input allowing independent band monitoring and
>  diversity receive
>
> - full-size front panel with convenient control of
>  many additional DSP parameters, etc, and more menu
>  entries for customization of operating features
>
> - close integration with the Elecraft K-line (KPA500 amp,
>  P3 panadapter, KAT500 ATU)
>
> 73,
> Wayne
> N6KR
>

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[Bill W4ZV]

Phil Hystad-3 wrote

It could be that they were merely very minor differences due to the way that the KX3 panel is different but I thought that there were a few other things that were different too.  Now, I can't specifically remember what they were so I will have to watch the video again to be more specific.

That's one of the best videos I've seen on the KX3!  The only feature I noticed that's not in the K3 is the two stage (10 dB and 20 dB) preamp.  I suppose that's helpful for 6 meters and for marginal antenna systems typical of portable operations.  It also has a dedicated APF button which is more easily accessible than using HOLD in the K3.  Will be interested to see what else you noticed that's unique to the KX3.

73,  Bill

[Holger Schurig-2]

Using the menu entry PREAMP, you can actually select 10 dB, 20 dB or
30 dB. According to the manual, 30 dB is the default for 6m.

The 10 dB preamp is also the isolation amp.

The 20 dB preamp has a better noise figure than the 20 dB one. The "30
db" preamp is just the concatenation of the two preamps.

If you select either the 10 dB preamp directly (or implicitly via the
30 dB menu setting), then the drawn current increases a bit.
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