[Elecraft] K3 Enhancement

Fri Apr 3 15:38:51 EDT 2015

I am.doing that exactly with a $250 afrdri SDR and an audio mixer panel.

I don't miss my flex at all!

And let me just tell you, you will not get K3 performance unless you buy a 6700 flex at almost double the cost of a k3 with sub Rx.

I have been an avid flex user for 3 years but the K3 is far superior in a lot of ways.   Listening fatigue, afx, filtering that is a brick wall, and quick tunability make the K3 a much better option for me.

Don't get me started on operating system lockups.   I am an IT consultant by profession with thousands and thousands of support hours under by belt, and even I have occasional problems.

When my PC dies, or gets a reboot, my K3 is still going strong.   That has tremendous value to me.

One misfire in a major contest and you'll wish for the standalone K3.   I know from experience!

Joe
PS.  I think the Flex radios are awesome.   I have nothing against them or their company and they have provided a tremendous resource for ham radio.  I just think the K3 is a better value for the money.

Joe
AB5OR

-------- Original message --------
From: "Joe Subich, W4TV" <lists at subich.com>
Date: 04/03/2015 2:29 PM (GMT-06:00)
To: elecraft at mailman.qth.net
Subject: Re: [Elecraft] K3 Enhancement

> This is possible using SDR software with an I/Q feed from the K3 IF.
> Check out the LP Pan unit and NaP3 SDR software.

This is also possible with many stand alone SDR receivers like SDR-IQ,
Elad, etc. Software like SpectraVue (SDR-IQ) or HDSDR (generic) can
link the SDR receiver to the K3 IF frequency. Many of the stand alone
SDR receivers will provide better performance, greater image rejection
and wider bandwidth than possible with LP-Pan/NaP3.

73,

... Joe, W4TV

On 2015-04-03 3:00 PM, Jim Brown wrote:
> On Fri,4/3/2015 10:59 AM, Guy Olinger K2AV wrote:
>> In the Flex series, a second RX is a matter of more software and the
>> memory
>> and processor capacity to service it.
>
> But not a second antenna for diversity reception.
>
> Bruce also asked, "short of having a second subreceiver in the K3 (which
> I do not have) - When operating Split, I know you can quickly switch
> between DX and calling stations by holding the "REV" button. The problem
> of course is you can only hear one or the other. Is it within reach of a
> simple software enhancement from our heroes at Elecraft to route these
> two audio signals to the left and right headphone channels from VFO A
> and B?"
>
> Answer:
>
> This is possible using SDR software with an I/Q feed from the K3 IF.
> Check out the LP Pan unit and NaP3 SDR software. You will also need a
> suitable sound card with stereo inputs and outputs. This software
> creates two SDR receivers within the computer, which can then be fed to
> the computer's sound card for playback. You plug your headphones into
> the computer's sound card output.
>
> The better the sound card, the better this will work. The wider the
> bandwidth of the sound card, the greater the width of the spectrum you
> can display. The software is free. LP-PAN costs $250. The recommended
> ASUS USB sound card costs $65.
>
> http://www.telepostinc.com/P3_comp.html
>
> 73, Jim K9YC
>
>
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