[RFI] LED lighting fixtures -

[donovanf at erols.com]

Hi Don, 


I replaced 24 florescent tubes with Hyperikon LED tubes:: 


www.hyperikon.com/content/specs/841X00XXX-XPack.pdf 


I've never heard a trace of RFI from them. The electronic ballasts 
for my florescent tubes were a problem especially on 6 meters, 


I even wrapped a few feet of wire around the LED tubes and 
connected it to my HP spectrum analyzer and could find no trace 
of RFI 


73 
Frank 
W3LPL 

----- Original Message -----

From: "Don Kirk" <wd8dsb at gmail.com> 
To: "Gary" <gary_mayfield at hotmail.com> 
Cc: "rfi" <rfi at contesting.com> 
Sent: Monday, May 24, 2021 2:37:17 PM 
Subject: Re: [RFI] LED lighting fixtures - 

Hi Gary, 

My following comments don't answer Hank's question, but they are related to 
your topic of LED tube lights. 

I replaced my magnetic ballast driven tubes that hang over my electronics 
workbench in the basement with LED tubes that operate directly off of 120 
Vac, and now I pick up all kinds of trash on my oscilloscope display when 
making low level signal measurements on my testbench, and I now often work 
in the dark (: 

I also hear the RFI from these tubes when testing antennas (testing small 
DF loops, etc.) inside the house in a room on our second floor above the 
basement and on the opposite side of the house and I'm at least 40 feet 
away from the LED tube lights, and some of the RFI is likely conducted 
through the house wiring. 

Can't find a manufacturer's name on my LED tube lights, but the model 
number is WENT84SUA-18WB-50CF, and I still see them being sold online. 

Just FYI, and YMMV. 
Don (wd8dsb) 

On Mon, May 24, 2021 at 9:48 AM Gary <gary_mayfield at hotmail.com> wrote: 

> Hank, 
> 
> I have had nary a problem replacing mine with L.E.D. tubes that 
> work from 120 Volts. I have been using tubes from 'batteries plus bulbs'. 
> You do have to remove/bypass the ballast. 
> 
> I have no interest in the company other than being a customer, and 
> your mileage may vary. 
> 
> 73, 
> Joe kk0sd 
> 
> -----Original Message----- 
> From: RFI <rfi-bounces+gary_mayfield=hotmail.com at contesting.com> On 
> Behalf Of HP 
> Sent: Monday, May 24, 2021 1:40 AM 
> To: rfi <rfi at contesting.com> 
> Subject: [RFI] LED lighting fixtures - 
> 
> I have 4 two tube 50+ year old T12-30 36 inch fixtures that have the old 
> magnetic ballasts - one has a failed ballast and looking for magnetic 
> replacement ballasts looks like they are close to non- obtainium. There are 
> plenty of "electronic" replacement ballasts - 
> 
> Philips Advance Ballast RELB-2S40-N 
> 3.6 Ballast shall comply with the requirements of the Federa l 
> Communications Commission (FCC) rules and regulations, Title 47 CFR part 
> 18, Consumer (Class B) for EMI/RFI (conducted and radiated) 
> 2.5 Ballast shall be high frequency electronic type and op erate lamps at 
> a frequency above 42 kHz to avoid interference w ith infrared devices and 
> eliminate visible flicker. 
> 
> I read the paper by W1MG on Home Depot selling "industrial " ballasts vs 
> "residential" but nowhere does it say a "residential" ballast is in fact RF 
> quiet in our uses. 
> 
> Anyone know if if this Phillips RELB-2S40N is quiet . Are there any 
> brands/part numbers of "electronic" ballasts known to be RF quiet ? 
> 
> 
> Hank K7HP 
> 
> 
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