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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Ralph,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>the most important question is: Can you detect any significant
birdie in the mentioned offset or a drifting carrier on the 10 m band. Of
course we do have some spurs or harmonics (mostly outside the ham bands) e.g.
of 25 MHz Ethernet controller Xtal etc. When you mix this spectrum with 116 MHz
of your 2m transverter or even with another LO frequency of 96/106 Mhz for the
micro-wave bands you shouldn’t be surprised about some ‘strange’
carriers. When these carriers are dramatically drifting you should look for a SMPS
device as causer.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Successful hunting!<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>73, Helmut, DC6NY<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Von:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> Hpsdr
[mailto:hpsdr-bounces@lists.openhpsdr.org] <b>Im Auftrag von </b>Ralph<br>
<b>Gesendet:</b> Samstag, 6. August 2016 13:00<br>
<b>An:</b> hpsdr@openhpsdr.org<br>
<b>Betreff:</b> [hpsdr] ANAN-10 28MHz generated birdie<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
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<p class=MsoNormal><span style='font-family:"Calibri","sans-serif";color:black'>I
have had the same problem of a wide drifting birdie in my 144MHz receiver.<o:p></o:p></span></p>
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<p class=MsoNormal><span style='font-family:"Calibri","sans-serif";color:black'>As
I use the ANAN-10 to drive 144MHz transverters from 28MHz this gives me the IF<o:p></o:p></span></p>
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<p class=MsoNormal><span style='font-family:"Calibri","sans-serif";color:black'>to
use my DB6NT microwave transverters<o:p></o:p></span></p>
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<p class=MsoNormal><span style='font-family:"Calibri","sans-serif";color:black'>(I
Have used various good quality 28-144MHz transverters with the same result)<o:p></o:p></span></p>
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<p class=MsoNormal><span style='font-family:"Calibri","sans-serif";color:black'> <o:p></o:p></span></p>
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<p class=MsoNormal><span style='font-family:"Calibri","sans-serif";color:black'>It
appears almost immediately on switch on and is noticable at the bottom end<o:p></o:p></span></p>
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<p class=MsoNormal><span style='font-family:"Calibri","sans-serif";color:black'>of
144MHz which is my IF for Microwave bands. Drifting LF from about 144.150<o:p></o:p></span></p>
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<p class=MsoNormal><span style='font-family:"Calibri","sans-serif";color:black'>down.<o:p></o:p></span></p>
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<p class=MsoNormal><span style='font-family:"Calibri","sans-serif";color:black'>The
ANAN-10 I have was bought a few years back, direct from Apache Labs India.<o:p></o:p></span></p>
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<p class=MsoNormal><span style='font-family:"Calibri","sans-serif";color:black'>and
noticed from the first time I used it it had this Birdie. I thought it may have<o:p></o:p></span></p>
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<p class=MsoNormal><span style='font-family:"Calibri","sans-serif";color:black'>been
picked up locally from some source or other, but When Dom mentioned it<o:p></o:p></span></p>
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<p class=MsoNormal><span style='font-family:"Calibri","sans-serif";color:black'>I
realised it was not just my set-up or local RF environment.<o:p></o:p></span></p>
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<p class=MsoNormal><span style='font-family:"Calibri","sans-serif";color:black'>73<o:p></o:p></span></p>
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<p class=MsoNormal><span style='font-family:"Calibri","sans-serif";color:black'>Ralph
G4ALY<o:p></o:p></span></p>
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