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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>I did find this supplier, <a
href="http://www.sfcable.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=24-968&Category_Code=dsubgenderchanger">http://www.sfcable.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=24-968&Category_Code=dsubgenderchanger</a><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>These are the kind of backshells I’m
looking for. Integral “clinch nuts” is the thing I don’t
see listed or don’t know for sure if that’s what I want.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>The application I’ve got is a KPC 3
tnc with a 25 pin female connector for the computer, or gps in a standalone
configuration case, and a 9 pin female connector on the gps. An
off-the-shelf null modem adapter is usually a 25 pin male to 9 pin female.
A 25 pin male to 9 pin male null modem appears to be much, much rarer and if
the adapter type backshells are available, it’ll be just as easy
(arguably) to create my own custom adapters. Since I found a source for
the backshells as noted above, the next problem is locating the necessary
securing hardware. I need screws to screw the adapter onto tnc and nuts
on the 9 pin side of the adapter to capture the screws on the gps 9 pin
connector.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Keith, KF4BXT<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> scott@opentrac.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> RE: [aprssig] FW: D-sub
connector components</span></font><o:p></o:p></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>Digi-Key and Mouser should both have all
of those parts. I can suggest some part numbers for the 9-pin connectors
and backshells. I carry those on my own site as well: <a
href="http://n1vg.net/opentracker/purchase.php">http://n1vg.net/opentracker/purchase.php</a></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>The backshells come with all the
hardware. For the side connecting to the GPS cable, you might want
connectors with integrated clinch nuts. Digi-Key carries a couple
thousand d-sub connectors and they've got the best parametric search around.</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>Let me know if you find any good homebrew
techniques for overmolding. I've done some stuff with hot melt glue when
necessary, but that's about it. I need some custom molding myself -
I've got to make cables for Motorola handhelds, and the spacing between the 2.5
and 3.5 mm plugs is too small for separate connectors. Mouser sells plugs
designed for overmolding, but aside from investing some serious money in
tooling and injection molding, I don't know how you'd use them.</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>Scott</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>N1VG</span></font><o:p></o:p></p>
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