[R-390] Crimp connectors

2002tii bmw2002tii at nerdshack.com
Sun Dec 13 14:28:01 EST 2009


Rich wrote:

>Does anyone have a source for the yellow shield crimp connectors used in
>the R390A.  These would be the yellow crimp connectors for the shields of
>the cables going to the audio and RF Gain pots.

I use teflon coax (the insulation will withstand soldering heat) and 
rings cut from brass hobby tubing.  Trim the braid to about 3/16" 
long, then fold it back over the jacket.  Slip on a 3/16" long, 
tight-fitting brass ring so that it covers the ends of the braid and 
leaves a bit of braid exposed at the end of the jacket, and solder 
that end of the ring to the braid.  If you need a ground pigtail, lay 
it over the shield before slipping on the ring.  You can use a piece 
of heatshrink tubing over the soldered ring for insulation and 
additional physical integrity.

If you don't want to replace the coax with teflon, you could just 
fold the shield back (soldering a ground pigtail to the shield if you 
need one) and apply heatshrink tubing.

Best regards,

Don






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