I wanted to give Sodira a try with my SDR-IQ for decoding C-Quam stereo transmissions. While this appears to be possible, I could not find any firm procedure for setting it up. Cobbling together info from various forums and sites, I have come up with this procedure. It works for me on my OS (Vista) with my soundcard (I use an external Sound Blaster X-Fi). Maybe it will work for you.
Note that this took a bit of doing, and seems to be pretty reliable. If you do not feel comfortable shooting down cranky apps and processes with Task Manager, this may not be for you...
Download and install the software.
1) Using Windows Explorer, create a folder such as /Sodira
2) Download the Sodira files from
http://www.dsp4swls.de/download/download.html and place the archive in this directory. I used
version 0.092
3) Extract the files to this folder.
4) You will need an additional DLL to communicate with the SDR-IQ. Go to the Winrad homepage at
http://winrad.org/ and download
the file from the link "Download the support files for the RFspace SDR-14 and SDR-I/Q receivers."
5) Download these support files to your folder and extract all.
Getting it to work can be tricky. Everything worked fine the first time I tried to configure and run Sodira. There was a problem with all subsequent restarts. When Sodira is closed, either Sodira or the support DLL will leave a file named "ExtIO-SDR14_IQ.ini" in your folder. It appears that this file can cause problems (cause the DLL to throw exceptions) if it is there when starting Sodira. The following seems to be a workaround to that problem. Using this procedure, I can get Sodira to start reliably without crashing.
1) Detach the SDR-IQ from the USB port and reattach it.
2) If there is a file in your folder named "ExtIO-SDR14_IQ.ini" DELETE IT.
3) Start Sodira; there may be a dialog complaining about an exception in the DLL. Close it and ignore it.
4) Click on the "Configuration" button in the Sodira window.
5) Click the "Wavedevice" tab page make sure that your sound card is selected.
6) Click the "Receiver" tab page.
7) Make sure that the "Using External IO DLL" checkbox is unchecked.
8. In the "Internal Receiver" drop down box select "No Receiver, IQ Data From Sound Card"
9) Click the "HW Init" button; Sodira should start, but it may just buzz.
10) Check the "Using External IO DLL" checkbox.
11) Click the "Load ExtIO" button.
12 Select the ExtIO_SDR14.dll file from the resulting file open dialog.
13) Click the "HW Init" button. Sodira should now be running properly.
To get CQUAM stereo
1) Select "AM Radio" in the drop down box in the lower right corner of the Sodira window.
2) Click the "Dialog Window" button just above the drop down.
3) Click the "Stereo (C-QUAM) button. That's it!
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