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<DIV><SPAN class=000222514-14032007><FONT face=Arial color=#0000ff size=2>Hi
All, Francis, Graham,</FONT></SPAN></DIV>
<DIV><SPAN class=000222514-14032007><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=000222514-14032007><FONT face=Arial color=#0000ff size=2>I
think a nice solution would be to have a number of options (or
"split" this project into 2 sub-projects?)</FONT></SPAN></DIV>
<DIV><SPAN class=000222514-14032007><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=000222514-14032007><FONT face=Arial color=#0000ff size=2>-
Make a filters-only board-section (let's call it "Alex-Filter") with some
clear junction to the control section to have simple control, like e.g. Francis'
parallel port control solution</FONT></SPAN></DIV>
<DIV><SPAN class=000222514-14032007><FONT face=Arial color=#0000ff size=2>- Make
a filter-control board-section (let's call it "Alex-Control") with a more or
less "intelligent" control circuit (I2C, CLPD and the like) </FONT></SPAN></DIV>
<DIV><SPAN class=000222514-14032007><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><FONT face=Arial><FONT size=2><FONT color=#0000ff><SPAN
class=000222514-14032007>Both on the same PCB, as "one
board"</SPAN></FONT></FONT></FONT></DIV>
<DIV><SPAN class=000222514-14032007><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><FONT face=Arial><FONT color=#0000ff><FONT size=2><SPAN
class=000222514-14032007>- If you want an Atlas based Alex,</SPAN><SPAN
class=000222514-14032007></SPAN> <SPAN class=000222514-14032007>leave the
board as-is and populate fully.</SPAN></FONT></FONT></FONT></DIV>
<DIV><FONT face=Arial><FONT color=#0000ff><FONT size=2><SPAN
class=000222514-14032007>- If you want the Alex-Filter remote controlled by
Alex-Control cut the board at the junction and populate both boards fully,
put Alex-Control in an Atlas card slot and wire it to the remote Alex-Filter
</SPAN></FONT></FONT></FONT></DIV>
<DIV><FONT face=Arial><FONT color=#0000ff><FONT size=2><SPAN
class=000222514-14032007>
<DIV><FONT face=Arial><FONT color=#0000ff><FONT size=2><SPAN
class=000222514-14032007>- If you want to have the parallel port solution cut
the board at the junction, populate only Alex-Filter and do not
use Alex-Control (save it for other control related functionality) and
interface/wire it to the parallel port</SPAN></FONT></FONT></FONT></DIV>
<DIV><FONT face=Arial><FONT color=#0000ff><FONT size=2><SPAN
class=000222514-14032007>
<DIV><FONT face=Arial><FONT color=#0000ff><FONT size=2><SPAN
class=000222514-14032007>- If you want to have Alex-Filter controlled by some
other means within HPSDR (e.g. other existing on board CLPD, other I2C), cut the
board at the junction, populate only Alex-Filter and interface/wire it to the
appropriate interface.</SPAN></FONT></FONT></FONT></DIV>
<DIV><FONT face=Arial><FONT color=#0000ff><FONT size=2><SPAN
class=000222514-14032007></SPAN></FONT></FONT></FONT></SPAN></FONT></FONT></FONT></SPAN></FONT></FONT></FONT><SPAN
class=000222514-14032007><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV></DIV></DIV>
<DIV><SPAN class=000222514-14032007><FONT face=Arial color=#0000ff size=2>I
think this would give people the most flexibility?</FONT></SPAN></DIV>
<DIV><SPAN class=000222514-14032007><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=000222514-14032007><FONT face=Arial color=#0000ff
size=2>Henry.</FONT></SPAN></DIV>
<DIV><SPAN class=000222514-14032007><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=000222514-14032007><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV></DIV>
<DIV><FONT face=Tahoma size=2>-----Original Message-----<BR><B>From:</B>
hpsdr-bounces@hpsdr.org [mailto:hpsdr-bounces@hpsdr.org] <B>On Behalf Of
</B>FRANCIS CARCIA<BR><B>Sent:</B> woensdag 14 maart 2007 3:20<BR><B>To:</B>
hpsdr@hpsdr.org<BR><B>Subject:</B> [hpsdr] preselector
control<BR><BR></DIV></FONT>
<BLOCKQUOTE dir=ltr
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px solid; MARGIN-RIGHT: 0px">
<DIV>Preselector control could come off the ozy parallel port saving an
atlas slot. A simple static decoder could decode the filter
selected. A nice solid box with coax connectors with filtered
control and power leads sounds a lot easier to do.</DIV>
<DIV> Sorry guys off on a tangent. You have a A/D doing FFT there is no
scanning going on in a preselector anyway. Back under my analog lurker rock.
Frank</DIV></BLOCKQUOTE></BODY></HTML>