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<DIV><FONT face=Arial size=2>I would like to copy the design ETO/Alpha used in
the mid 70s to mid 80s on their tuned input circuits. They used a toroid in
combination with a small cap and resistor I believe. I have the schematic
somewhere here in the shack but my main concern is how is the toroid
wound?</FONT></DIV>
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<DIV><FONT face=Arial size=2>I have a Sigma XR3000D amp that does not have tuned
input on 160, 80, or 40 meters but does have tuned input for 20-10. I have never
seen a design like this. Anyway, if anyone knows how Alpha wound the coils I
would appreciate it if they could spread the good news. </FONT></DIV>
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<DIV><FONT face=Arial size=2>Lane</FONT></DIV>
<DIV><FONT face=Arial size=2>Ku7i</FONT></DIV></BODY></HTML>