[TowerTalk] Fwd: Fwd: Now THIS is a tower climb!

Jim Lux jimlux at earthlink.net
Wed Jan 14 14:20:31 EST 2015


On 1/14/15 11:05 AM, Hans Hammarquist via TowerTalk wrote:
> It's a well know fact that the life span of incandescent light  bulbs increases with lower operating voltage. If I remember it right the lifespan increases by 7 times with a 10% decrease in voltage. I guess a 240V bulb working on 120V would outlast the life of the radio station. Light efficiency (power in - light out) is not that good though.
>
>

3.5x life if 12th power (e.g. 0.9^12 = 0.28)



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