[RFI] Samsung refrigerator

Gary Smith wa6fgi at yahoo.com
Tue Dec 1 12:31:11 EST 2015


We have a 4 yr old LG that has not made a peep on any of the HF bands.

Gary...wa6fgi
Yvonne...n6rxz

On 12/1/2015 7:19 AM, Kim Elmore wrote:
> Hmmm... This is a bit worrisome. We are replacing our current refrigerator with a new Kemore Elite (aka LG) unit. We have an LG front loading washing machine and dryer and both are RF quiet. Anyone know about LG?
>
> Kim N5OP
>
> "People that make music together cannot be enemies, at least as long as the music lasts." -- Paul Hindemith
>
>> On Dec 1, 2015, at 08:54, Mike Ryan <mryan001 at tampabay.rr.com> wrote:
>>
>> Bill, The sort of problem that Mel described from the variable speed control, I had with a new A/C air handler that was installed her about 5 years ago in Palmetto. I ended up having to the replace the brand new fan motor with a single speed unit and all went fine after that. (Less energy efficient no doubt.)
>>        We bought what we think was a great G/E Profile series refrigerator two years ago..no noise whatsoever.  Though a refrigerator (or any appliance) on sale may save you $$, the grief that you may get from it later certainly would not be worth the savings. I would buy one only with an agreement that if an rfi problem occurs within a given amount of time, that the unit could be returned or exchanged.  -Mike, K4CVL
>>
>> -----Original Message----- From: john at kk9a.com
>> Sent: Monday, November 30, 2015 4:49 PM
>> To: rfi at contesting.com
>> Subject: Re: [RFI] Samsung refrigerator
>>
>> Unplugging the refrigerator for a 48 hour contest would not make my XYL
>> very happy and I would certainly miss the cold beer afterwards.
>>
>> John KK9A
>>
>>
>> To: <rfi at contesting.com>
>> Subject: [RFI] Samsung refrigerator
>> From: "Mel Crichton" <kj9c at iquest.net>
>> Date: Mon, 30 Nov 2015 20:44:46 -0000
>>
>> Not sure if it was my review or not, but our 2011 Samsung two door low
>> energy refrigerator is horrible for RFI. When Samsung USA played dumb and
>> said that they could do nothing about it, I voided the warranty and
>> installed common mode and differential chokes INSIDE the casing. Did not
>> help. I added more common mode choke on the power line outside with no
>> effect.
>>
>> The culprit is not the compressor but the compressor speed control that
>> creates variable frequency AC .... it's no doubt a square wave generator.
>> Sniffing the case shows the most RFI coming from the front panel near the
>> ice maker. When it runs, all HF bands have hash with shaprt spikes every 5
>> KHz.
>>
>> a cheaper unit with a bit more compressor noise and only ONE speed would
>> likely not have the variable speed feature..... and may be RF quiet
>>
>> We also have a Samsung LED TV that likes to turn itself on whenever I am
>> on 80 meters.... not enough shielding (also tried common mode on this one)
>>
>> For this reason I will not buy Samsung, and find no problem with Sony
>> electronics in the same area of the house.
>>
>> (In both units I unplug them when I am on the air. My wife hates it when I
>> am in a 2 day contest.)
>>
>> Mel KJ9C
>>
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