[Elecraft] KX3- laptops for I/Q

[Larry Phipps]

Correction... In the last paragraph of my post I see that I included too 
much info from the iSDR web page. The page is aimed at generic SDR use, 
and therefore lists as a requirement the need for an SDR like SoftRock 
or LP-PAN. This is NOT needed with the KX3, of course. Additional 
hardware is required to get a stereo audio input to the mobile device. I 
sent a correction message yesterday, but it was apparently blocked by 
the Elecraft list server.

Larry N8LP



On 2/2/2012 12:00 PM, elecraft-request at mailman.qth.net wrote:
> Date: Wed, 01 Feb 2012 12:24:18 -0500
> From: Larry Phipps<n8lp at telepostinc.com>
> Subject: Re: [Elecraft] KX3- laptops for I/Q
> To:elecraft at mailman.qth.net
> Message-ID:<4F297542.4090003 at telepostinc.com>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> Most laptops don't have a stereo input, only mono mic input, so they are
> worthless for SDR. I haven't tested any pc card type sound cards that
> are really good, but some can be acceptable for limited bandwidth if you
> can accept the center spike in the display. I have had very good results
> with my laptop and E-MU 0204 USB sound card.
>
> The SDR Widget sound card should be good since it uses the AK5394A ADC,
> but I completely disagree with their test results of the E-MU 0202. My
> tests using the same software testing suite were MUCH better. Also, they
> didn't test the E-MU 1212m, which uses the AK5394 and gives spectacular
> results.
>
> Even though a lot of emphasis is put on sound cards, I think most casual
> users of SDRs would be surprised at the results that can be obtained
> with basic sound cards... as long as they have stereo line level inputs.
>
> For basic field use with the KX3, there is an SDR app for iPhone / iPad
> / iPod Touch called iSDR which might be worth looking at. For stereo mic
> input, additional hardware is required, and of course a SoftRock or
> LP-PAN is still required.
>
> Larry N8LP