[R-390] Line Filter Replacement

Bruce MacLellan brumac at peoplepc.com
Sat Nov 11 15:33:28 EST 2006


Barry,
   Nice work!    And the price for each unit, ready to install is????

Bruce

-----Original Message-----
>From: Barry <n4buq at knology.net>
>Sent: Nov 11, 2006 2:58 PM
>To: R-390-List <R-390 at mailman.qth.net>
>Subject: [R-390] Line Filter Replacement
>
>The subject of leaky line filters has come up on this list several times
>over the years.  Most of us are aware of the danger of the "hot" chassis
>they present, how they will trip GFIs, etc.  The radio can be run on an
>isoloation transformer, but a good transformer can be expensive.
>
>One solution is to replace the filter with a modern line filter that doesn't
>have the current leakage problems of the original filters, but finding a
>replacement that will fit without modifying the chassis seems to be
>impossible.
>
>While it's not as elegant as I'd really like, I think I have a solution.
>Point your browser to:
>
>http://www.knology.net/~thelanding/LineFilter/
>
>As you can see, the modern filter fits neatly into the custom-machined
>housing, and the modification is completely reversable.
>
>I didn't like having to splice the neitral wire on the right-hand side, but
>it would have required me to pull some of the wire out of the harness to
>make it reach the new filter and I didn't want to do that.  If you know
>where I can get some of the old-fashioned solder posts (the round type with
>#6-32 internal threads), please let me know.  I found one place, but they
>are very expensive and I can't seem to get the guy to respond to my emails.
>
>Regards,
>
>Barry - N4BUQ
>
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