Tester wrote:
Of course, flourescent bulbs create RFI.

http://www.nytimes.com/2007/01/02/business/02bulb.html

The Energy Challenge
Power-Sipping Bulbs Get Backing From Wal-Mart

What I would much rather see, for reasons related to both astronomy and
radio, would be for people to stop turning on so many lights when they
aren't necessary anyway, and otherwise use them intelligently. There
is absolutely no need to drown either the inside or outside of one's
house with light the way some folks do. There is little evidence that
outdoor lighting prevents crime, and considerable evidence that bad
lighting can aid crime, cause dangerous glare and loss of night vision,
screw up the environment and, of course, also foul up radio
communication.

Bruce Jensen