<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
<HTML>
<HEAD>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1">
<META NAME="Generator" CONTENT="MS Exchange Server version 08.00.0681.000">
<TITLE>AW: [hpsdr] Level calculation error in Two Tone Test generation routine</TITLE>
</HEAD>
<BODY>
<!-- Converted from text/rtf format -->
<P DIR=LTR><SPAN LANG="de"></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri">It seems to be a never ending story: PEP output power means the effective power at the top of the envelope. If only 1 tone is applied to the amp, PEP = CW and a proper method to determine the transfer characteristic of an amp. For correct operation the user should know the important markers like 1dB compression point or 3 dB saturation (except you’re using PS, hi)</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT FACE="Calibri">For multi-tone drive is valid: PEP = 1/R</FONT></SPAN><SPAN LANG="de"></SPAN><SPAN LANG="en-us"><SUB><FONT FACE="Calibri">L</FONT></SUB></SPAN><SPAN LANG="de"></SPAN><SPAN LANG="en-us"> <FONT FACE="Calibri">(U1</FONT></SPAN><SPAN LANG="de"></SPAN><SPAN LANG="en-us"><SUB><FONT FACE="Calibri">eff</FONT></SUB></SPAN><SPAN LANG="de"></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri"> + U2</FONT></SPAN><SPAN LANG="de"></SPAN><SPAN LANG="en-us"><SUB><FONT FACE="Calibri">eff</FONT></SUB></SPAN><SPAN LANG="de"></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri"> +….+Un</FONT></SPAN><SPAN LANG="de"></SPAN><SPAN LANG="en-us"><SUB><FONT FACE="Calibri">eff</FONT></SUB></SPAN><SPAN LANG="de"></SPAN><SPAN LANG="en-us"><FONT FACE="Calibri">)*2</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT FACE="Calibri">This means for IM check: 2 tone : each carrier 6dB down; 3 tone each carrier 9,5 dB down. BTW you can measure the correct adjustment on your panadapter comparing ‘tune signal’ and 2 tone signal at the same drive position. The two test carriers are 6 dB down and fully complying with the A2204B or even EIA standard for IM determination.</FONT></SPAN><SPAN LANG="de"></SPAN><SPAN LANG="en-us"></SPAN></P>
<P DIR=LTR><SPAN LANG="de"></SPAN><SPAN LANG="en-us"></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT FACE="Calibri">73, Helmut, DC6NY</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="de"></SPAN><SPAN LANG="de"></SPAN></P>
<P DIR=LTR><SPAN LANG="de"></SPAN><SPAN LANG="de"><FONT FACE="Consolas">-----Ursprüngliche Nachricht-----<BR>
Von: Hpsdr [<A HREF="mailto:hpsdr-bounces@lists.openhpsdr.org">mailto:hpsdr-bounces@lists.openhpsdr.org</A>] Im Auftrag von Simon Brown<BR>
Gesendet: Mittwoch, 23. November 2016 07:30<BR>
An: hpsdr@lists.openhpsdr.org<BR>
Betreff: Re: [hpsdr] Level calculation error in Two Tone Test generation routine</FONT></SPAN><SPAN LANG="de"></SPAN></P>
<P DIR=LTR><SPAN LANG="de"><FONT FACE="Consolas">***** High Performance Software Defined Radio Discussion List *****</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="de"><FONT FACE="Consolas">Warren,</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="de"><FONT FACE="Consolas">You are indeed spot-on.</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="de"><FONT FACE="Consolas">Simon Brown, GK4ELI</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="de"><FONT FACE="Consolas"><A HREF="http://sdr-radio.com">http://sdr-radio.com</A></FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="de"><FONT FACE="Consolas">-----Original Message-----</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="de"><FONT FACE="Consolas">From: Hpsdr [<A HREF="mailto:hpsdr-bounces@lists.openhpsdr.org">mailto:hpsdr-bounces@lists.openhpsdr.org</A>] On Behalf Of Warren</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="de"><FONT FACE="Consolas">C. Pratt</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="de"><FONT FACE="Consolas">Sent: 23 November 2016 04:52</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="de"><FONT FACE="Consolas">To: hpsdr@lists.openhpsdr.org</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="de"><FONT FACE="Consolas">Subject: Re: [hpsdr] Level calculation error in Two Tone Test generation</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="de"><FONT FACE="Consolas">routine</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="de"><FONT FACE="Consolas">***** High Performance Software Defined Radio Discussion List *****</FONT></SPAN></P>
<BR>
<P DIR=LTR><SPAN LANG="de"><FONT FACE="Consolas">_______________________________________________</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="de"><FONT FACE="Consolas">HPSDR Discussion List</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="de"><FONT FACE="Consolas">To post msg: hpsdr@openhpsdr.org</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="de"><FONT FACE="Consolas">Subscription help: <A HREF="http://lists.openhpsdr.org/listinfo.cgi/hpsdr-openhpsdr.org">http://lists.openhpsdr.org/listinfo.cgi/hpsdr-openhpsdr.org</A></FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="de"><FONT FACE="Consolas">HPSDR web page: <A HREF="http://openhpsdr.org">http://openhpsdr.org</A></FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="de"><FONT FACE="Consolas">Archives: <A HREF="http://lists.openhpsdr.org/pipermail/hpsdr-openhpsdr.org/">http://lists.openhpsdr.org/pipermail/hpsdr-openhpsdr.org/</A></FONT></SPAN></P>
<br /><br />
<hr style='border:none; color:#909090; background-color:#B0B0B0; height: 1px; width: 99%;' />
<table style='border-collapse:collapse;border:none;'>
<tr>
<td style='border:none;padding:0px 15px 0px 8px'>
<a href="https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient">
<img border=0 src="http://static.avast.com/emails/avast-mail-stamp.png" alt="Avast logo" />
</a>
</td>
<td>
<p style='color:#3d4d5a; font-family:"Calibri","Verdana","Arial","Helvetica"; font-size:12pt;'>
Diese E-Mail wurde von Avast Antivirus-Software auf Viren geprüft.
<br><a href="https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient">www.avast.com</a>
</p>
</td>
</tr>
</table>
<br />
</BODY>
</HTML>