[R-390] R-390A and GFI

[gary.biasini at shaw.ca]

Barry,

Thanks for taking the time to reply.  

-----Original Message-----
From: Barry <n4buq at knology.net> 
Sent: Monday, March 25, 2024 6:29 PM
To: gary biasini <gary.biasini at shaw.ca>
Cc: Barry Scott <72volkswagon at gmail.com>; hamfish at comcast.net; R-390 Mailing List <R-390 at mailman.qth.net>
Subject: Re: [R-390] R-390A and GFI

Gary,

That was probably 20 years ago.  If I did have pictures, I'm pretty sure I couldn't find them anymore.  It was a fairly simple little plate, though.  It would be pretty easy to make with a milling machine or, possibly a good file.

Thanks,
Barry

> 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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