[hpsdr] Question - audio noise and Janus

[Phil Harman]

Hi Richard,

I have a 'dead bug' breadboard of the Janus A/D board running with a number 
of  A/D converter chips connected. The best chip so far gives a -160dBm 
noise floor (in a 11Hz bandwidth) and a 120dB dynamic range.  That's about 
state of the art for both figures I think. How close we can get with a PCB 
layout remains to be seen but Lyle's layout follows all the rules so my bet 
is we are going to get very close to the performance of the breadboard.

73's Phil.... VK6APH


----- Original Message ----- 
From: "Richard Hosking" <richardh at iinet.net.au>
To: "HPSDR List" <hpsdr at hpsdr.org>
Sent: Sunday, May 14, 2006 7:21 AM
Subject: [hpsdr] Question - audio noise and Janus


> ***** High Performance Software Defined Radio Discussion List *****
>
> Gday all - I am a newcomer to the list
> Looks most exciting
>
> I am a long time watcher of the Linrad project - Leif certainly had a
> good handle on all the sources of noise in the system
> I appreciate that the ADC has a good noise performance, but I would be
> interested in the overall card noise performance in a mixed signal
> environment.
>
> Richard
> VK6BRO
> _______________________________________________
> HPSDR Discussion List
> To post msg: hpsdr at hpsdr.org
> Subscription help: http://lists.hpsdr.org/listinfo.cgi/hpsdr-hpsdr.org
> HPSDR web page: http://hpsdr.org
> Archives: http://lists.hpsdr.org/pipermail/hpsdr-hpsdr.org/
>
>
>
> -- 
> No virus found in this incoming message.
> Checked by AVG Free Edition.
> Version: 7.1.392 / Virus Database: 268.5.6/338 - Release Date: 12/05/2006
>
> 



-- 
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.1.392 / Virus Database: 268.5.6/338 - Release Date: 12/05/2006


 1147576899.0