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Subject:
From:
Aaron Cannon <[log in to unmask]>
Reply To:
For blind ham radio operators <[log in to unmask]>
Date:
Tue, 5 Feb 2008 22:27:54 -0600
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I have found several web pages that say:
"Values given in dBd can be converted to dBi units by Adding 2.14 this is
because a Dipole Antenna has 2.14dB gain over an isotropic radiator, I.e. a
Dipole antenna is said to have 2.14 dBi gain."

The text seems to imply that a dipole antenna (measured in DBD) has a
greater numeric value than an isotropic antenna (measured in DBI), because
they say things like, "a Dipole Antenna has 2.14dB gain over an isotropic
radiator".  However, in there formula, they say that you add 2.14 to dbd to
get dbi, which would give dbi a greater numeric value then DBD.

What am I missing, or did everyone just copy from everyone else and get it
wrong?

The reason I am interested is because I'm studying for my extra class exam
and this has come up.

Thanks!

73s
kd6qpk


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