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Nice work Roger, Is this software change easily done in PowerSDR for HPSDR by a layman like me? Would a decompile/recompile be necessary?<br>Very impressive comparisons.<br><br><br><br>73, Bill<br><br><br><br><br>W.B.Runyon,Sr.<br>Amateur Radio WF4R (FM16ts)<br>Chesapeake, VA<br><br>May 2, 2010 03:43:44 PM, 73w3sz@gmail.com wrote:<br><blockquote style="border-left: 3px solid rgb(102, 153, 204);">***** High Performance Software Defined Radio Discussion List *****<br><br>Hello, All,<br><br>I was able to get out to my microwave site and make some comparison gifs <br>of the old and new PowerSDR waterfalls [both fully zoomed and at maximal <br>display bandwidth], and to compare them to Linrad.<br><br>I posted them so folks can see the difference between 'old' and 'new'.<br><br>There is quite a difference between the old and new PowerSDR waterfalls <br>for this weak signal which was 5-8 dB out of the noise on peaks.<br><br>The weak signal of interest, from a weak signal source on 3456.041, is <br>at approximately 3456.041 on the PowerSDR displays, and at 41000 on the <br>Linrad display [the center of the Linrad display is at 50000, so it is <br>just below the center of the Linrad display.<br><br><br>original PowerSDR fully zoomed:<br>http://www.nitehawk.com/w3sz/originalPowerSDR3456weaksignal.GIF<br><br>modified PowerSDR fully zoomed:<br>http://www.nitehawk.com/w3sz/newPowerSDR3456weaksignalnar.GIF<br><br>original PowerSDR maximal bandscope width:<br>http://www.nitehawk.com/w3sz/originalPowerSDR3456weaksignalwide.GIF<br><br>modified PowerSDR maximal bandscope width:<br>http://www.nitehawk.com/w3sz/newPowerSDR3456weaksignalwide.GIF<br><br>Linrad bandscope:<br>http://www.nitehawk.com/w3sz/linrad3456weaksignal.gif<br><br>The signal levels in dB are not consistent across PowerSDR instances <br>because I was also trying to recalibrate the PowerSDR settings for <br>signal level today using an 8640B. Those differences do not affect the <br>PanAdapter or the Waterfall displays.<br><br>73,<br><br>Roger Rehr W3SZ<br><br>_______________________________________________<br>HPSDR Discussion List<br>To post msg: hpsdr@openhpsdr.org<br>Subscription help: http://lists.openhpsdr.org/listinfo.cgi/hpsdr-openhpsdr.org<br>HPSDR web page: http://openhpsdr.org<br>Archives: http://lists.openhpsdr.org/pipermail/hpsdr-openhpsdr.org/<br></blockquote></body></html>
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