[RFI] Cree LED Bulbs?

[Mike Ryan]

The supplies utilized were of the same 'ilk' and not a linear type such as 
an Astron, etc.  I never got a chance to do the battery check today but may 
very well be able to do so on Monday. I am also going to take a little 10 
amp supply over there as well to try it.  But BROTHER are this lighting 
system noisy.  I will update the group as to what I find.  - Mike

-----Original Message----- 
From: Dale
Sent: Sunday, March 10, 2013 11:49 PM
To: Mike Ryan ; rfi at contesting.com
Subject: Re: [RFI] Cree LED Bulbs?

Mike,

When you changed out the power supplies, did you change to another power 
supply identical to the original, or did you change to a known "linear" 
power supply (NOT a switcher)?  The battery and a linear supply should 
produce quiet, identical results.  If not, then the individual light/lamp 
units might contain integral small switchers.  That would be a real bummer.

73, Dale
WA9ENA


-----Original Message-----
>From: Mike Ryan <mryan001 at tampabay.rr.com>
>Sent: Mar 10, 2013 3:48 PM
>To: rfi at contesting.com
>Subject: Re: [RFI] Cree LED Bulbs?
>
>I have a neighbor across the street that just installed a $400+ landscaping
>lighting system. These are KILLING me on HF when they turn on at night.  I
>even get noise on 220 and 440 FM from them.  We have changed out the power
>supplies..no help. I am going to try a CAR BATTERY to see what happens.
>That might isolate the problem to the power supply.  But if that doesn't
>work, I guess I will have to try some clip of ferrite blocks.  I wonder if
>these are the same thing you are working with and if so, what's the fix?
>The neighbor has been 'receptive' but I don't want to keep getting in his
>face about it until I am on to the fix  - Mike
>
>-----Original Message----- 
>From: Aaron Kreider
>Sent: Sunday, March 10, 2013 4:32 PM
>To: rfi at contesting.com
>Subject: Re: [RFI] Cree LED Bulbs?
>
>I bought some cheap LED bulbs on ebay which range from bad RFI to
>horrible RFI.    So while they were cheap (maybe as low as $6), I
>recommend staying away from Ebay. They also produce less light than
>advertized (the 9 watt bulbs were dimmer than the 7 watt ones I got at
>Lowes).  The quality control was terrible.
>
>Aaron
>
>On 3/10/2013 4:01 PM, Eric Rosenberg wrote:
>> Is anyone familiar withthe LED light bulbs made by Cree (www.cree.com)
>>
>> They look nice and are half the price of the competition.
>>
>> They are available from Home Depot, on-line only through the end of this
>> month, and then in the stores.
>>
>> I'm (obviously) interested in whether they generate rfi/noise!
>>
>> 73,
>> Eric W3DQ
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