Good observations, Steve!

Thanks, and vy best 73 from Tom Behler: KB8TYJ

----- Original Message -----
From: "Steve" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Tuesday, May 11, 2004 2:18 PM
Subject: Re: concerns when transmitting in a hospital


> Sean, Tom and Listers:
>
> If I recall from my old theory days, the exposure to an RF field varies
with
> the inverse square of the distance.  Thus, the closer you are to the
radiation
> source, the more problemmatic this can become.  Of course, as we know from
the
> RF exposure calculations, that frequency also plays a role.
>
> At Field Day last year, the guy who helped us erect antennas had a
pacemaker.
> He asked that we not transmit on HF while he was going to be walking under
the
> antenna.  Of course, at that point, he would have been no more than 35
feet
> from the maximum radiated power.
>
> It wasn't a problem for him as an operator, as he was a bit further from
the
> antenna and the RV provided additional RF shielding.
>
> I think with a broadcast station, you are not going to be that close to
the
> antenna; and the 25KWW FM station Sean referenced probably specifies its
power
> as Effective Radiated Power, which takes antenna gain and pattern
compression
> into account.
>
> Steve, K8SP