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<DIV>Hi Johannes,</DIV>
<DIV> </DIV>
<DIV>Thanks for your question. From memory that comment applies to the
wideband data i.e. the raw 16 bit samples from the ADC. In which case we
only have a real signal which results in a double sided FFT output. I just use
the positive frequency output to display the wideband data.</DIV>
<DIV> </DIV>
<DIV>The comment was that in the future we could produce a complex signal from
the real signal and hence display any desired portion of the 0-66MHz wideband
spectrum.</DIV>
<DIV> </DIV>
<DIV>The data from the main receiver is 24 bit down converted, decimated and
filtered I&Q, all done in the FPGA, which is processed for
demodulation and the sampling rate width bandscope by KK.</DIV>
<DIV> </DIV>
<DIV>73 Phil....VK6PH</DIV>
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<DIV style="font-color: black"><B>From:</B> <A
title=johannes.sedlmeier@gmail.com
href="mailto:johannes.sedlmeier@gmail.com">Johannes Sedlmeier</A> </DIV>
<DIV><B>Sent:</B> Sunday, July 28, 2013 12:19 AM</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] KISS KONSOLE code</DIV></DIV></DIV>
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High Performance Software Defined Radio Discussion List *****<BR><BR>
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<DIV>Hello everyone,<BR><BR></DIV>I'm an RF engineer from Germany and I am
currently working to fit the KISS KONSOLE program to my needs.<BR><BR></DIV>I
wondered, if there is a proper downconversion done somewhere in the code. I
could not find anything, except a note from the programmer in
"EthernetDevice.cs" that says, that <BR><BR><PRE style="FONT-FAMILY: consolas; BACKGROUND: white; COLOR: black"><SPAN style="COLOR: green"> //temporary -- soon will do digital down-conversion</SPAN>
<SPAN style="COLOR: green">// with sin & cos, so we'll actually have I & Q data to enter.<BR><BR></SPAN></PRE><PRE style="FONT-FAMILY: consolas; BACKGROUND: white; COLOR: black"><SPAN style="COLOR: green"><SPAN style="BACKGROUND-COLOR: rgb(0,0,0)"><SPAN></SPAN></SPAN><FONT color=#000000>So it seems, that only the Real Part of the received signal is used. Is this correct or am I missing something?<BR>
<BR></FONT></SPAN></PRE><PRE style="FONT-FAMILY: consolas; BACKGROUND: white; COLOR: black"><SPAN style="COLOR: green"><FONT color=#000000>Thanks in advance, I really appreciate your work you have done so far on the HPSDR-Project.<BR>
<BR></FONT></SPAN></PRE><PRE style="FONT-FAMILY: consolas; BACKGROUND: white; COLOR: black"><SPAN style="COLOR: green"><FONT color=#000000>Greetings,<BR><BR></FONT></SPAN></PRE><PRE style="FONT-FAMILY: consolas; BACKGROUND: white; COLOR: black"><SPAN style="COLOR: green"><FONT color=#000000>Johannes Sedlmeier<BR></FONT></SPAN></PRE><PRE style="FONT-FAMILY: consolas; BACKGROUND: white; COLOR: black"><SPAN style="COLOR: green"><BR></SPAN></PRE></DIV>
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