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Satellite TV receivers & systems support forums
Fringe Reception General
dbi vs db
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<blockquote data-quote="steffo78" data-source="post: 141149" data-attributes="member: 196557"><p>I am wondering about dBi and dB.</p><p>When you look at specifications for dishes some manufacturers use dBi (triax,Andrews) and others dB (Gibertini,Fortecstar).</p><p>I thought that dBi is the gain you get compared to a isotropic radiator (non-directive antenna), and dB is used to compare with a dipole.</p><p>The dipole would be something like 1.5dB better than iso. </p><p>This is a big difference for a dish!</p><p>Does someone know if its always the dBi figure that should be used???</p></blockquote><p></p>
[QUOTE="steffo78, post: 141149, member: 196557"] I am wondering about dBi and dB. When you look at specifications for dishes some manufacturers use dBi (triax,Andrews) and others dB (Gibertini,Fortecstar). I thought that dBi is the gain you get compared to a isotropic radiator (non-directive antenna), and dB is used to compare with a dipole. The dipole would be something like 1.5dB better than iso. This is a big difference for a dish! Does someone know if its always the dBi figure that should be used??? [/QUOTE]
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Fringe Reception General
dbi vs db
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