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<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Frank, you need a bit more than a bit, hi . The transformer L@500kHz
has to be 4 times the L@2MHz (usual cutoff) or as a figure around 50µH!<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 style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>73, Helmut, DC6NY<o:p></o:p></span></p>
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color:#1F497D'><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>
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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>FRANCIS CARCIA<br>
<b>Gesendet:</b> Dienstag, 6. Dezember 2016 00:09<br>
<b>An:</b> hpsdr@lists.openhpsdr.org<br>
<b>Betreff:</b> [hpsdr] 630m<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
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<div id="yui_3_16_0_ym19_1_1480978002711_29137">
<p class=MsoNormal style='background:white'><span style='font-family:"Helvetica","sans-serif";
color:black'>All,<o:p></o:p></span></p>
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<p class=MsoNormal style='background:white'><span lang=EN-US style='font-family:
"Helvetica","sans-serif";color:black'>Watch your drain current on 630m. The
transformer reactance is a bit low for 500khz.<o:p></o:p></span></p>
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<div id="yui_3_16_0_ym19_1_1480978002711_29137">
<p class=MsoNormal style='background:white'><span lang=EN-US style='font-family:
"Helvetica","sans-serif";color:black'>Type 43 might be a better core
material. <o:p></o:p></span></p>
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<p class=MsoNormal style='background:white'><span style='font-family:"Helvetica","sans-serif";
color:black'>Frank WA1GFZ<o:p></o:p></span></p>
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