[Elecraft] OT: LED Light Bulbs

[Kevin Stover, AC0H]

When I was changing the bulbs out I took the opportunity to remove all 
dimmers, never really used them, and a touch lamp the wife hated (large 
blessing on me).

The wife has been looking at touch faucets for the sink. They've got to 
be an RFI nightmare. I said NO. Plumber makes enough the way it is. Now 
you have to find one that can wire the faucet too. One step too far.

The wife's quilting machine is next. it's going to get the K9YC treatment.

On 10/24/2017 7:55 AM, Bob McGraw K4TAX wrote:
> The only time I've noticed RFI issues from CFL or LED bulbs is when they 
> are being excited by RF.  I've measured 3 or 4 different ones of 
> different brands and wattage ratings.  This was done using a fixture 
> where by the bulb was mounted on a suitable surface in a socket with the 
> transmit antenna {dual band VHF/UHF}  some 6 ft away from the lamp and 
> the receive antenna {connected to a spectrum analyzer with a similar 
> dual band VHF/UHF antenna}, about 6 ft from the lamp.  In all cases no 
> noise above background noise was observed.   When the transmitter was 
> activated, the spikes of noise appeared.  With the transmitter off, the 
> spikes again were not present.    Not a real analytical or scientific 
> method but some degree of indication that some are better than others, 
> some are worse than others.
> 
> 73
> 
> Bob, K4TAX
> 
> K3S  s/n 10163
> 

-- 
R. Kevin Stover    AC0H
FISTS #11993
SKCC #215
NAQCC #3441
ARRL