[hpsdr] Mercury SSB Phase Noise Testing

[Ronald Cox]

Marco,

I have converted the file to a .jpg and uploaded the file to the  
receiver performance testing page on the Wiki. Thanks for your  
valuable input.

Ron, W9KFB
Indianapolis


On Oct 26, 2009, at 4:07 PM, Marco IK1ODO wrote:

> ***** High Performance Software Defined Radio Discussion List *****
>
> In last days I also did some PN measurements on Mercury and Perseus  
> for comparison.
> The file is in http://www.spinelectronics.eu/ftp/HPSDR_PN.pdf  - if  
> somebody wants to copy the file in the opensdr site, please do.
> The complete excel file with calculations is available, of course.
> Nico IV3NWV (the designer of Perseus) obtained comparable values for  
> Perseus, so I think that data are reliable.
> AFAIK no commercial signal generator has such a low phase noise  
> close to the carrier, so I used a known good HP 10811A oscillator.
> For comparison, I included in the plot the typical PN of the HP  
> OCXO, as per HP Journal data, and the PN of the Crystek 122.88 MHz  
> oscillator, scaled to 10 MHz (green curve)
> The two receivers have similar architecture, and behave in a very  
> similar way.
>
> 73 - Marco IK1ODO / AI4YF
>
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