RFI
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Re: [RFI] LED Bulbs

To: dhallam@knology.net, rfi@contesting.com
Subject: Re: [RFI] LED Bulbs
From: Dale <svetanoff@earthlink.net>
Reply-to: Dale <svetanoff@earthlink.net>
Date: Tue, 11 Feb 2014 21:25:01 -0600 (GMT-06:00)
List-post: <rfi@contesting.com">mailto:rfi@contesting.com>
David,

In a word - yes.  If the LEDs each have a switching power supply/driver, then 
changing to plain incandescent or halogen bulbs would eliminate all of those 
RFI generators.

73, Dale
WA9ENA


-----Original Message-----
>From: "David C. Hallam" <dhallam@knology.net>
>Sent: Feb 10, 2014 12:48 PM
>To: rfi@contesting.com
>Subject: Re: [RFI] LED Bulbs
>
>I may have made an unwarranted conclusion, but I assumed the LED were 
>substituted for halogen without any other changes.  I will see if I can 
>get a clarification on that point.  Would a change in bulb types make 
>any difference in the RFI being generated?
>
>David
>KW4DH
>
>On 2/10/2014 1:14 PM, Jim Brown wrote:
>> On 2/10/2014 11:07 AM, Dave Cole wrote:
>>> Who would have thought the LED's could radiate so far?
>>
>> It's not the LEDs, it's the wires (antennas) connected to the 
>> switching power supply for the LEDs. This should come as no surprise 
>> to any ham -- switching power supplies are generators of RF trash, 
>> that puts RF current on those wires, and like any other antenna, those 
>> wires radiate the trash.
>>
>> Thank you VERY much for posting details of part numbers and vendors 
>> for the bad products.
>>
>> 73, Jim K9YC
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>
>-- 
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>from wasting the labors of the people under the pretense of taking care of 
>them."
>Thomas Jefferson
>
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