[hpsdr] Janus Lives!!

[Philip Covington]

Wow, this looks great!  I can't wait to see the 96 and 192 kHz screen shots.

73 de Phil N8VB


On 7/3/06, Phil Harman <pvharman at arach.net.au> wrote:
> ***** High Performance Software Defined Radio Discussion List *****
>
> All,
>
> I've just completed the CPLD software for the Alpha Janus board and the
> results are spectacular.
>
> The image below is of the Janus sampling at 48kHz.  As you can see the noise
> floor is at a spectacular -159dBm (it actually hovers around -160dBm but
> that is when I captured the screen). As you can see there are absolutly no
> spurs in the passband.
>
> The file name is "Janus noise floor.jpg"  for those that have a problem with
> getting files from www.hamsdr.com
>
> http://www.hamsdr.com/personaldirectory.aspx?id=348
>
> The second screen shot is at 48kHz in spectrum mode. Again no spurs and the
> signal at 0Hz is -120dBm. This drops below the band noise when I connect the
> SDR1000 hardware.
>
> http://www.hamsdr.com/personaldirectory.aspx?id=349
>
> The file name is "Janus spectrum.jpg"
>
> I still have some more tests to do as well as testing  at 96/192kHz but so
> far all is looking great.
>
> There are a small number of minor changes to the prototype PCB which will be
> addressed shortly.  My sincere thanks to Lyle KK7P for doing such a great
> job on the PCB design, Bill KD5TFD for the PowerSDR software modifictions so
> Janus will work with it and help with the Verilog coding and all those who
> helped me up the FPGA learning curve.
>
> Onwards to OZY!!
>
> 73's Phil...VK6APH
>
>
>
>
>
>
>
>
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