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

[Hans Hammarquist via TowerTalk]

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.


Hans - N2JFS



-----Original Message-----
From: Herbert Schoenbohm <herbert.schoenbohm at gmail.com>
To: towertalk <towertalk at contesting.com>
Sent: Tue, Jan 13, 2015 10:09 pm
Subject: Re: [TowerTalk] Fwd:  Now THIS is a tower climb!


I once visited a BC station in Trinidad that had the red "on the air" 
light inside a double panel of glass between the studio and control 
room.  I foolishly asked "do you mean you have to remove one of those 
glass panels when you have to replace a burned out lamp?" The answer was 
"no...we never have to replace them since they are 240 VAC bulbs and we 
power them with 120 volts."  I guess it cuts back on the illumination 
but extends the life of the bulbs significantly.


Herb Schoenbohm, KV4FZ
On 1/13/2015 6:15 PM, Roger (K8RI) on TT wrote:
> Now, invent a really long life bulb and you will sell at least a 
> hundred !!

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