[R-390] R-390A and GFI

[Barry]

I had some parts made at JLCPCB from black nylon.  Very nice and VERY inexpensive!

Barry - N4BUQ

----- Original Message -----
> From: "Bob kb8tq" <kb8tq at n1k.org>
> To: "thoyer" <thoyer1 at verizon.net>
> Cc: "R-390 Mailing List" <R-390 at mailman.qth.net>
> Sent: Tuesday, March 26, 2024 9:08:36 AM
> Subject: Re: [R-390] R-390A and GFI

> Hi
> 
> Done that way ( out of a plastic material), the mount is something that could be
> done
> with a 3D printer. These days, you just do up a file and send it off to be
> printed. The typical
> cost is usually less than running them off your own printer.
> 
> Bob
> 
>> On Mar 25, 2024, at 8:44 PM, Tom via R-390 <r-390 at mailman.qth.net> wrote:
>> 
>> 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: r-390-bounces at mailman.qth.net <r-390-bounces at mailman.qth.net> On Behalf Of
>> gary.biasini at shaw.ca
>> Sent: Monday, March 25, 2024 8:15 PM
>> To: Barry Scott <72volkswagon at gmail.com>; hamfish at comcast.net
>> Cc: R-390 at mailman.qth.net
>> Subject: Re: [R-390] R-390A and GFI
>> 
>> Barry,
>> 
>> Do you have any pictures?
>> 
>> Gary I. Biasini
>> ________________________________
>> From: Barry Scott <r-390-bounces at mailman.qth.net> on behalf of Barry Scott
>> <72volkswagon at gmail.com>
>> Sent: Monday, March 25, 2024 6:00:37 PM
>> To: hamfish at comcast.net <hamfish at comcast.net>
>> Cc: R-390 at mailman.qth.net <R-390 at mailman.qth.net>
>> 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 <hamfish at comcast.net> 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: r-390-bounces at mailman.qth.net <r-390-bounces at mailman.qth.net> On
>>> Behalf Of Jim
>>> Sent: Monday, March 25, 2024 9:58 AM
>>> To: R-390 at mailman.qth.net
>>> 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
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