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Hi Bob,

True - the duty cycle is low, but it would still make me nervous.  Besides
the RF exposure, I expect there's quite a voltage at the tips of the

So, thanks to all for the comments and math.  I still think I'll stay down
here in the shack, with the antennas on the roof, hoping to zap the
squirrels as they romp on the shingles and gnaw on my coax (but that's 

Greg  KO6TH

    From: Bob Bruninga <bruninga@usna.edu>
To: "Greg D." <ko6th_greg@hotmail.com>
CC: amsat-bb@AMSAT.Org
Subject: Re: [amsat-bb] circular polarized Arrow antenna
Date: Thu, 31 Jan 2002 08:42:20 -0500 (EST)

On Wed, 30 Jan 2002, Greg D. wrote about RADHAZ when operating 50w with a
handheld antenna:

>Howard's analysis (I think it was his posting) showed that you'd need
>arms 53cm long to be safe, direcly behind the antenna.  Maybe you
>could stand in a null somewhere.

Doesnt duration also factor into the equation?
THe duty cycle for satelltie QSO's is extremely low....


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