Message	Date	From	Subject
5961	2011-03-28 05:40:31	hb9aqh	NPR testing
Hi all, A few days ago, in the SDR_Italia forum a link to an interesting paper has been published about Noise Power Ratio Testing or NPR testing for short to evaluate communication equipment: www.woodboxradio.com/download/Final_report_VGO_Renon_2009.pdf Not being a pro I wonder why this technique that avoids the crutch of two tone testing mentioned in the literature, has not found its way into the ARRL lab and into EMFRD. 73, Carlo HB9AQH
5962	2011-03-28 05:50:46	Tim	Re: NPR testing
It's possible (likely?) that the situation in Europe has traditionally been different than in the US. Here, even when 40M was littered with a bunch of SW broadcasters

Hi all,
A few days ago, in the SDR_Italia forum a link to an interesting paper has been published about Noise Power Ratio Testing or NPR testing for short to evaluate communication equipment:

www.woodboxradio.com/download/Final_report_VGO_Renon_2009.pdf

Not being a pro I wonder why this technique that avoids the crutch of two tone testing mentioned in the literature, has not found its way into the ARRL lab and into EMFRD.

73, Carlo HB9AQH