[TowerTalk] Re: Rf Safety

alsopb alsopb@gloryroad.net
Wed, 13 Sep 2000 16:29:54 +0000


Bill,

Your conclusion is based upon assuming the algorithms used are
meaningul.  
Given that they are pure fiction for the exposure impact, I have
another
explanation for the "predicted" safety of standing next to a 50 kw
broadcast station antenna.

The regs that were adopted made sure that they would not negatively
impact Broadcasters by design.  If they did, you could be sure they
would not
have been adopted.

73
de Brian/K3KO

m

Bill Turner wrote:
> 
> On Tue, 12 Sep 2000 15:06:08 -0400, Bill Coleman AA4LR wrote:
> 
> >It stands there today. 50 kW of power at 750 kHz day and night, in the
> >middle of the parking lot for the mall. You can't get within about 50
> >feet of the tower, because of a protective wall, but most of the shopping
> >complex is within range of the guy wires.
> >
> >If that isn't an "uncontrolled" space, I don't know what is....
> >
> _________________________________________________________________
> 
> 50 feet is plenty.  I did a quick check using the U of Texas RF safety
> calculator for 50,000 watts, dipole type gain, 750 kHz and included
> ground reflection (worst case).  They are well within compliance.
> Only at 13.54 feet or less would they be out.  If the antenna gain
> were increased to 6db, the uncontrolled distance rises to only 20.94
> feet.
> 
> 73, Bill W7TI
> 
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