<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Frank, <div><br></div><div>The diversity program PowerSDR v1.19.3.4.diversity20 (K5SO 12MAY2011) and its predecessors have been doing that with two Mercury boards for quite a while, in fact. You may download the latest from k5so.com. </div><div><br></div><div>73, Joe K5SO</div><div><br></div><div><div><div>On Jun 27, 2011, at 7:40 PM, FRANCIS CARCIA wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite">***** High Performance Software Defined Radio Discussion List *****<br><br><table cellspacing="0" cellpadding="0" border="0"><tbody><tr><td valign="top" style="font: inherit;"><div>Hi All,</div> <div>I just logged on to Dallas Lankford's new site, he has a delta loop with two feed lines on each bottom corner with a phase shifter to steer the null. I wonder if this would be possible with two Mercury boards? I read a couple weeks back that now it takes 3 Mercury boards to do null steering. I wonder if it is still possible to use only two boards. I'm not quite ready to buy two more modules. </div> <div>BTW, Penny seems to function ok at 500 kHz. Tthe transformer specs support 500 kHz. </div> <div>Tnx for the help guys! </div> <div>Frank WA1GFZ </div></td></tr></tbody></table>_______________________________________________<br>HPSDR Discussion List<br>To post msg: <a href="mailto:hpsdr@openhpsdr.org">hpsdr@openhpsdr.org</a><br>Subscription help: <a href="http://lists.openhpsdr.org/listinfo.cgi/hpsdr-openhpsdr.org">http://lists.openhpsdr.org/listinfo.cgi/hpsdr-openhpsdr.org</a><br>HPSDR web page: <a href="http://openhpsdr.org">http://openhpsdr.org</a><br>Archives: <a href="http://lists.openhpsdr.org/pipermail/hpsdr-openhpsdr.org/">http://lists.openhpsdr.org/pipermail/hpsdr-openhpsdr.org/</a></blockquote></div><br></div></body></html>