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<DIV>Hi Helmet,</DIV>
<DIV> </DIV>
<DIV>Congratulations on your successes with Envelope Tracking – great
progress. Just one small correction, the PWM frequency from Hermes is
240kHz.</DIV>
<DIV> </DIV>
<DIV>I wonder if you are considering a direct-off-the-mains PWM so that a high
current, low voltage supply, is not needed prior to the PWM ?</DIV>
<DIV> </DIV>
<DIV>I think this would enable a very small and lightweight QRO linear to be
built. </DIV>
<DIV> </DIV>
<DIV>Good luck for your further work in this interesting area.</DIV>
<DIV> </DIV>
<DIV>73 Phil...VK6PH </DIV>
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<DIV style="font-color: black"><B>From:</B> <A title=dc6ny@gmx.de
href="mailto:dc6ny@gmx.de">Helmut Oeller</A> </DIV>
<DIV><B>Sent:</B> Saturday, October 4, 2014 3:42 PM</DIV>
<DIV><B>To:</B> <A title=hpsdr@lists.openhpsdr.org
href="mailto:hpsdr@lists.openhpsdr.org">hpsdr@lists.openhpsdr.org</A> </DIV>
<DIV><B>Subject:</B> [hpsdr] ET and PS</DIV></DIV></DIV>
<DIV> </DIV></DIV>
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style='FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: "Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; DISPLAY: inline'>*****
High Performance Software Defined Radio Discussion List *****<BR><BR>
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<P class=MsoNormal><SPAN lang=EN-US>Hi,<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US>Envelope tracking (ET) is an advanced method
to boost efficiency of linear amplifiers. Many thanks to Phil, VK6PH, and
Warren, NR0V, who made the access to the envelope information on Hermes and the
necessary baseband processing in PowerSDR possible.<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US>More details about the current project
status at </SPAN><A href="http://www.hamsdr.com/dnld.aspx%20%20"><SPAN
lang=EN-US>http://www.hamsdr.com/dnld.aspx </SPAN></A> <SPAN
lang=EN-US><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US>73, Helmut, DC6NY<o:p></o:p></SPAN></P>
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style='FONT-FAMILY: "Arial","sans-serif"'><o:p></o:p></SPAN> </P></DIV>
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