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<DIV><FONT size=2 face=Arial>Hi Mike,</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>Just tested with all the latest versions of FPGA
code, using Metis and Doug's latest PowerSDR. With 50 ohms on the antenna socket
of Mercury then the only spur I can see is at 28.415MHz at -130dBm on the
bandscope. KK gives exactly the same result.</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>73 Phil...VK6APH</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: black"><B>From:</B>
<A title=es7aaz@gmail.com href="mailto:es7aaz@gmail.com">Riho B., ES7AAZ</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=hpsdr@lists.openhpsdr.org
href="mailto:hpsdr@lists.openhpsdr.org">hpsdr@lists.openhpsdr.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Monday, September 26, 2011 8:01
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [hpsdr] Mercury and 28Mhz
receive</DIV>
<DIV><BR></DIV>***** High Performance Software Defined Radio Discussion List
*****<BR><BR>
<P>
<HR>
<P></P>Hi, <BR><BR>I can confirm that, but these are not so strong I'm
using clamp on choke right<BR>after Mercury input. Removing that choke
makes spurious bigger, even non-moving<BR>0Hz spurious is bigger without the
choke. <BR><BR><BR>Ozy 1.9<BR>Mercury 2.9<BR>Penelope 1.4<BR>PowerSDR
2.2.3<BR><BR><BR>73's,<BR>Riho, ES7AAZ.<BR><BR>26.09.2011 13:00, Helmut Oeller
kirjutas:
<BLOCKQUOTE cite=mid:002501cc7c33$1c61f5a0$5525e0e0$@de type="cite"><PRE wrap="">***** High Performance Software Defined Radio Discussion List *****
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<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">Hi
Mike,<O:P></O:P></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"><O:P></O:P></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"
lang=EN-US>I can confirm the same ‚phenomenon’, using mercury_eu (V6.4) and
Joe’s 1.9.3.4 diversity20 (10AUG2011).<O:P></O:P></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"
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<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Calibri','sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"
lang=EN-US>73 Helmut, DC6NY<O:P></O:P></SPAN></P>
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<P class=MsoNormal><B><SPAN
style="FONT-FAMILY: 'Tahoma','sans-serif'; FONT-SIZE: 10pt">Von:</SPAN></B><SPAN
style="FONT-FAMILY: 'Tahoma','sans-serif'; FONT-SIZE: 10pt"> <A
class=moz-txt-link-abbreviated
href="mailto:hpsdr-bounces@lists.openhpsdr.org">hpsdr-bounces@lists.openhpsdr.org</A>
[<A class=moz-txt-link-freetext
href="mailto:hpsdr-bounces@lists.openhpsdr.org">mailto:hpsdr-bounces@lists.openhpsdr.org</A>]
<B>Im Auftrag von </B>Mike Stevenson<BR><B>Gesendet:</B> Montag, 26.
September 2011 11:25<BR><B>An:</B> <A class=moz-txt-link-abbreviated
href="mailto:hpsdr@lists.openhpsdr.org">hpsdr@lists.openhpsdr.org</A><BR><B>Betreff:</B>
[hpsdr] Mercury and 28Mhz receive<O:P></O:P></SPAN></P></DIV></DIV>
<P class=MsoNormal><O:P></O:P></P>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Arial','sans-serif'; FONT-SIZE: 10pt">I have been
spending quite a lot of time operating
on </SPAN><O:P></O:P></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Arial','sans-serif'; FONT-SIZE: 10pt">10m now is open
again.</SPAN><O:P></O:P></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Arial','sans-serif'; FONT-SIZE: 10pt">There has always
been a higher level of spurious signals on this band than any other even
with Mercury input terminated directly in 50
ohms.</SPAN><O:P></O:P></P></DIV>
<DIV>
<P class=MsoNormal><O:P></O:P></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Arial','sans-serif'; FONT-SIZE: 10pt">What I am now
seeing using Doug's, W5WC software with zero frequency IF is between
about 28.300 and 28.650 a spurious signal at 0Hz in the receive pass
band.</SPAN><O:P></O:P></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Arial','sans-serif'; FONT-SIZE: 10pt">Also I am hearing
what sounds like intermod produced by other signals in the display
pass band producing an audible output. I have see the effect produce by
signal of only S7. Also at the same time I see the 0Hz spurious being
modulated by the off frequency S7 signal.</SPAN><O:P></O:P></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Arial','sans-serif'; FONT-SIZE: 10pt">The above applies
to Doug's software 1.19.3.4, 1.19.3.5 and 2.2.3.</SPAN><O:P></O:P></P></DIV>
<DIV>
<P class=MsoNormal><O:P></O:P></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Arial','sans-serif'; FONT-SIZE: 10pt">Using Bill's
KD5TFD</SPAN> <SPAN
style="FONT-FAMILY: 'Arial','sans-serif'; FONT-SIZE: 10pt">software with
9Khz IF I see much the same spurious on the spectrum display but 0Hz
spurious is offset by 9Khz and so far have not detected any unwanted
products in the audio output.</SPAN><O:P></O:P></P></DIV>
<DIV>
<P class=MsoNormal><O:P></O:P></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Arial','sans-serif'; FONT-SIZE: 10pt">Current
cards</SPAN><O:P></O:P></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Arial','sans-serif'; FONT-SIZE: 10pt">Mercury
V2.9</SPAN><O:P></O:P></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Arial','sans-serif'; FONT-SIZE: 10pt">Pennylane
V1.4</SPAN><O:P></O:P></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Arial','sans-serif'; FONT-SIZE: 10pt">Metis V1.4</SPAN><O:P></O:P></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Arial','sans-serif'; FONT-SIZE: 10pt">Excalibur</SPAN><O:P></O:P></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Arial','sans-serif'; FONT-SIZE: 10pt">Alex</SPAN><O:P></O:P></P></DIV>
<DIV>
<P class=MsoNormal><O:P></O:P></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Arial','sans-serif'; FONT-SIZE: 10pt">Has anyone else
seen this or do I have a one off problem.</SPAN><O:P></O:P></P></DIV>
<DIV>
<P class=MsoNormal><O:P></O:P></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Arial','sans-serif'; FONT-SIZE: 10pt">Mike
G8ALS</SPAN><O:P></O:P></P></DIV></DIV><BR>
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