I tend to agree with either eliminating the filter like you did with the Delrin block or gutting and straight-lining the old filter. I doubt there's much need for the line filter in a residential setting.
That said, I went to extreme measures to preserve/rebuild the line filter in my current R390. That was a PAIN! Barry - N4BUQ > Attached are a couple pics from one of my 390A's. For this one I made a Delrin > block and used screws as studs to feed the power in and then attached it to an > off the shelf line filter. I fabricated a mount for the line filter as well. > > On another unit I disassembled the line filter and gutted it. Connected the > input to the output internally then sealed it back up and reinstalled. > > Another I opened up and replaced the caps with AC line caps. > > Experimenting with different approaches as you can tell. > > Tom > W3TA > > -----Original Message----- > From: [email protected] <[email protected]> On Behalf > Of > [email protected] > Sent: Monday, March 25, 2024 8:15 PM > To: Barry Scott <[email protected]>; [email protected] > Cc: [email protected] > Subject: Re: [R-390] R-390A and GFI > > Barry, > > Do you have any pictures? > > Gary I. Biasini > ________________________________ > From: Barry Scott <[email protected]> on behalf of Barry Scott > <[email protected]> > Sent: Monday, March 25, 2024 6:00:37 PM > To: [email protected] <[email protected]> > Cc: [email protected] <[email protected]> > Subject: Re: [R-390] R-390A and GFI > > Years ago, I made some aluminum adapter plates that mounted on the existing > threads where FL-101 was. It had a properly-shaped hole that accepted a > modern > line filter with an IEC connector. Clean, no-mod update. > > Thanks, > Barry > > > On Mon, Mar 25, 2024 at 5:44 PM <[email protected]> wrote: > >> Good Afternoon Jim, >> >> Another thought comes to mind, do you need the original R390/A line >> filter (FL101)? Most of today's interference is by way of the antenna input, >> RFI. >> Line noise is better dealt with by finding that source and unplug it. >> FL101 is what trips GFIs because of leakage of the caps inside of said >> line filter. So power the R390/A (with no antenna connected) through >> an outlet that does not have a GFI, is there noise? If there is no >> noise, at this time a FL101 or equivalent is not needed. Remove FL101 >> and be done with it. If there is noise, the search begins. Might be >> easiest to unplug the source, maybe ferrite thingies, or a line filter >> mentioned by the rest of the long distant R390/A service dept. >> >> If noise is by way of the antenna input....................welcome to >> today's world. >> >> Regards, >> Craig >> >> -----Original Message----- >> From: [email protected] <[email protected]> On >> Behalf Of Jim >> Sent: Monday, March 25, 2024 9:58 AM >> To: [email protected] >> Subject: [R-390] R-390A and GFI >> >> I'm in a new location and when I plugged in my R-390A it tripped the >> GFI's in the room. >> I see that there is a modification to the 390 AC filter, but time is >> short and I would like to get it on the air. >> Is there a simple way to keep the 390 tripping GFI's? >> >> TNX >> Jim >> WB2TPS >> ______________________________________________________________ >> R-390 mailing list >> Home: http://mailman.qth.net/mailman/listinfo/r-390 >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:[email protected] >> >> This list hosted by: http://www.qsl.net Please help support this email >> list: http://www.qsl.net/donate.html >> >> ______________________________________________________________ >> R-390 mailing list >> Home: http://mailman.qth.net/mailman/listinfo/r-390 >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:[email protected] >> >> This list hosted by: http://www.qsl.net Please help support this email >> list: http://www.qsl.net/donate.html >> > ______________________________________________________________ > R-390 mailing list > Home: http://mailman.qth.net/mailman/listinfo/r-390 > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > ______________________________________________________________ > R-390 mailing list > Home: http://mailman.qth.net/mailman/listinfo/r-390 > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > > ______________________________________________________________ > R-390 mailing list > Home: http://mailman.qth.net/mailman/listinfo/r-390 > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ R-390 mailing list Home: http://mailman.qth.net/mailman/listinfo/r-390 Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
