Ed, Don's comments about a serial port being unnecessary was with respect to the KX3 specifically, not the SDR-IQ. The KX3 will provide baseband "audio" output, which will need to be fed into the stereo input of a soundcard on a computer for panadapter capability. Think of it as having an LP-Pan built in.
If one wants "point and shoot" functions from the panadapter software, then a USB/serial control port back to the KX3 will be needed. And yes, the KX3 will have that capability as it has already been announced that the KX3 will use a subset of the K3 command structure. (there is a serial port on the KX3). Also, a USB interface device for the KX3 is also in the plans from Elecraft. It will connect to a USB port on the computer, and have the required connector on the other end to plug directly into the radio. I hope this helps clear up any possible confusion. 73, Bruce, N1RX (original message) 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 ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
