KX3 Capabilities (was: Unhappy With Your KX3?)

[Kevin Kleinfelter]

Joe raises an interesting point.  I definitely want to use digital modes,
so I will be routing audio between my radio and my computer.  Other than
having to wire up a funky patch cable to use the "Phones" + "Mic" jacks,
and the fact that audio/mic gain applies to Phones/Mic but (sometimes) not
to Line In/Out, *what drawbacks are there in using Phones+Mic instead of
line in/out?*

Also, I figure that I can run the KX3 I/Q output through an SDR program,
and use a software audio patch-board to create a virtual line in.  *Anyone
doing that?  How well does it work for you*?

Finally, I see that the KX3 has I/Q out, but I don't see any I/Q input.  *Am
I missing it, or is it just not there?*  *If I try to use a KX3 as a
computer-controlled SDR, what would substitute for a KX3 I/Q input*?

Thanks!
Kevin
KK4KIK

---------- Forwarded message ----------
------------------------------

Message: 29
Date: Sat, 04 Aug 2012 09:17:23 -0400
From: "Joe Subich, W4TV" <[hidden email]>
Subject: Re: [Elecraft] Unhappy With Your KX3?
To: [hidden email]
Message-ID: <[hidden email]>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed


> Elecraft is marketing the KX3 as a backpack AND desktop radio (with
> not available KXPA100 and KXAT100).

If Elecraft are marketing the KX3 as anything other than a trail radio
the design missed the mark by 5 km.  Given the under powered speaker,
lack of headphone amplifier, and lack of separate line in and line out
audio connections, the rig is severely lacking is the "home station"
department - particularly for digital (RTTY/PSK/JT65/etc.) operation.
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[Don Wilhelm-4]

Kevin,

You are correct - there is only I/Q output - no input.

There in no line in/out on the KX3 - use the headphone \jack for audio
out and the microphone jack for audio in.  The only downside I see is
that you have to plug and unplug the cables when changing from voice
modes to data.

The KX3 was designed to be a trail friendly compact mobile transceiver.

73,
Don W3FPR

On 8/4/2012 1:23 PM, Kevin Kleinfelter wrote:

> Joe raises an interesting point.  I definitely want to use digital modes,
> so I will be routing audio between my radio and my computer.  Other than
> having to wire up a funky patch cable to use the "Phones" + "Mic" jacks,
> and the fact that audio/mic gain applies to Phones/Mic but (sometimes) not
> to Line In/Out, *what drawbacks are there in using Phones+Mic instead of
> line in/out?*
>
> Also, I figure that I can run the KX3 I/Q output through an SDR program,
> and use a software audio patch-board to create a virtual line in.  *Anyone
> doing that?  How well does it work for you*?
>
> Finally, I see that the KX3 has I/Q out, but I don't see any I/Q input.  *Am
> I missing it, or is it just not there?*  *If I try to use a KX3 as a
> computer-controlled SDR, what would substitute for a KX3 I/Q input*?
>

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[Tony Estep]

On Sat, Aug 4, 2012 at 12:23 PM, Kevin Kleinfelter <[hidden email]>wrote:

> ...I can run the KX3 I/Q output through an SDR program,
> and use a software audio patch-board to create a virtual line in....
>
========
Not exactly. You can use a software virtual cable to create a virtual line
out from the SDR program, which can feed your digital program Fldigi or
whatever. Audio in to the KX3 goes into the mic jack. But remember you need
one sound card for the I-Q and another for the digital encode/decode.

>
> Finally, I see that the KX3 has I/Q out, but I don't see any I/Q input.
>
==========
A panadapter program like PSDR has an I-Q input, but a hardware SDR
doesn't. It gets its RF in from the antenna and puts out I-Q for the pan
program.

Tony KT0NY

--
http://www.isb.edu/faculty/facultydir.aspx?ddlFaculty=352
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