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<DIV>Tom </DIV>
<DIV> </DIV>
<DIV>This circuit should fill the bill. Thanks to WW2R for this design.</DIV>
<DIV> </DIV>
<DIV><A href="http://g4fre.com/hpsdr_high_side.pdf">http://g4fre.com/hpsdr_high_side.pdf</A></DIV>
<DIV> </DIV>
<DIV>Just apply 9 v instead of 12 v! It drives my Yaesu FT-747 brick and
filters.</DIV>
<DIV> </DIV>
<DIV>73 de Joe K1RQG</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV>
<DIV>In a message dated 3/3/2011 8:15:11 P.M. Eastern Standard Time,
k1jj@comcast.net writes:</DIV>
<BLOCKQUOTE style="PADDING-LEFT: 10px; MARGIN-LEFT: 10px"><FONT style="BACKGROUND-COLOR: transparent" face=Arial color=#000000 size=2>*****
High Performance Software Defined Radio Discussion List *****<BR><BR><BR><BR>
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<DIV dir=ltr align=left><SPAN class=828590101-04032011><FONT face=Arial>My
plans call for using an old Yaesu FT-1000D 200W PA unit with relay
switched LP Filters as my linear amplifier for Penny.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=828590101-04032011><FONT face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=828590101-04032011><FONT face=Arial>I
would like to switch bands on this low pass filter
assembly using the mouse PSDR software band selections along with the
Penny/Mercury band selections.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=828590101-04032011><FONT face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=828590101-04032011><FONT face=Arial>Could
someone advise me on the best approach to switch the 9 volt LP filter relays,
160, 75, 40, 20, 15 and 10M using the existing output
interface? Or do I need to build an interface? </FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=828590101-04032011><FONT face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=828590101-04032011><FONT face=Arial>The
simple alternative is to just use a rotary band switch and switch
the L.P filter manually. I want to explore using the mouse
auto-method first.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=828590101-04032011><FONT face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=828590101-04032011><FONT face=Arial>Thanks.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=828590101-04032011><FONT face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=828590101-04032011><FONT face=Arial>Tom,
K1JJ</FONT></SPAN></DIV><BR><BR>_______________________________________________<BR>HPSDR
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