[Elecraft] SDR-IF and I/Q questions

[Edward R. Cole]

Don,

Not trying to be argumentative, but...

The SDR-IQ uses a USB-2.0 interface and not audio.  Some SDR actually 
provide A/D conversion inside the box with digital output 
streams.  The units you mentioned are audio-baseband.

The only issue would whether one needed a good soundcard or not.

I understand that many sw provide for radio control so need that 
access (whether via USB or RS232).  K3 being one of those that offer 
external control.  I wonder if the KX3 will have that ability, as well?

Very handy for the "click frequency" operations on sw like psk-31 
(variants).  The eme SDR sw (Linrad) that I am using has this ability 
(if proper drivers are available for the radio).

------------------------------

Message: 37
Date: Thu, 10 Nov 2011 07:42:12 -0500
From: Don Wilhelm <w3fpr at embarqmail.com>
Subject: Re: [Elecraft] SDR-IF and I/Q questions
To: elecraft at mailman.qth.net
Message-ID: <4EBBC6A4.4020700 at embarqmail.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

Ed,

The I/Q outputs are baseband audio - just as would be the case with the
output of LP-Pan, or a Sofrrock receiver, or most any SDR receiver.  The
serial (or USB) port is only used when rig control is introduced in
addition to the panadapter function.

73,
Don W3FPR




73, Ed - KL7UW, WD2XSH/45
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