Quote:
Originally Posted by Small Engine
One is a 8 bay or bow tie antenna that says it has a gain of 15.8db and the other is a Yagi style and is a bit smaller in size but says its gain is 28db.
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Be careful with antenna gain numbers in advertisements. There is pure antenna gain and there is antenna gain plus amplifier gain if the two are packaged together. There is gain over an isotrope antenna, gain over a half wave dipole in free space, and gain over an isotropic antenna with 6 db of ground gain added.
Advertising agencies call it "puffery".
What can't be easily inflated is beamwidth. If you compare the antenna patterns of two antennas, the one with a narrow beamwidth has more gain than an antenna with a wider beamwidth.
If you can find a real antenna with 28 db gain, let me know, I want one. If you stacked multiple 91xg's to get 28 db gain, you'd need about 24 of them.