Alberto,
Thank you for the new features. All of these new features are quite helpful.
While it may be operator error, on my part, I am not able to balance the image signal with the Soundcard Skew Calibration routine. The best I can get is about a 25dB null of the image signal. The gain settin seems to have zero effect and the phase adjustment has a very small null at 0.1 degrees positive. 20 dB is about the worst balance I can get at any setting so I am only seeing about 5 dB of image rejection when adjusted as well as I can adjust it.
Using Rocky 1.4 as the baseline I am seeing more than 60 dB image rejection with a smooth phase shift from 0 to about 2 degrees and a gain shift of from 1.140 to about 1.180 both rising fom left to right on Alex's I/Q balance graph.
Using the new M0KGK software I am getting 25 to 30 dB image rejection
but this software does not have a functioning balance routine at this point.
73 - Mike - K9JRI
Alberto I2PHD <[EMAIL PROTECTED]> wrote:
Alberto I2PHD <[EMAIL PROTECTED]> wrote:
As I am not ready yet to release my new SDR program, I decided to give
some touch-ups to SDRadio. Specifically, I have added the possibility to
specify the LO frequency used, so to have a correct frequency display,
and a few other small enhancements, as reported here :
As there isn't an User Guide (shame on me...). to specify the LO
frequency, just click on the frequency display, as shown here :
You can download a self-installing package from my Web site :
http://www.weaksignals.com
Thanks for reporting errors and malfunctions.
73 Alberto I2PHD
73 - Mike - K9JRI
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