Some of the engineers at my office are "playing" with next generation LEDs. You can't look into them because they are just too bright. They only need 3 or 4 of these LEDs to put out the same amount of light as a 100W incandescent bulbs. Yet, they consume only 10W to 14W of electricity.

The color of the light was really indistinguishable from the incandescent ones. I thought they were nice. The LED "bulb" still got really hot. Hot enought to burn your finger though.

The ones you can buy in stores right now are far cry from the ones the guys are "playing" with at my office.

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The radio interference is not from the LEDs themselves but the power converter they use. It's a high efficiency converter called switching regulators. They make lots of radio noise. If designed right, they don't make much noise, If poorly designed or made cheaply, they make lots of "noise".

smilingcat