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Examples
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All CP antennas offer 2-3 dBi gain for linearly polarized signals and are ground-plane independent.
ThomasNet News - Today's New Product News ThomasNet News 2010
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PRO216 - 8 a 3 element Yagi antenna with 8 dBi gain
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Omni-directional Gain: 7 dBi ALTERNATE ITEM #: HAI7SIP UPC: 0603992506095
WN.com - Articles related to Australia mining firm strikes gold in RP 2010
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HDDA5W-29 29 dBi single polarity (horizontal or vertical); HDDA5W-29-DP 29 dBi dual polarity
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PRO216 - 8 a 3 element Yagi antenna with 8 dBi gain
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An RFID tag read rate of up to 400 tags per second and a tag read distance of over 30 feet with a 6 dBi antenna.
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Omni-directional Gain: 7 dBi ALTERNATE ITEM #: HAI7SIP UPC: 0603992506095
WN.com - Articles related to Australia mining firm strikes gold in RP 2010
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HDDA5W-32-DP 32 dBi dual polarity (horizontal or vertical).
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According to their numbers (15 dBm transmit power and 10.4 dBi antenna gain), it's roughly 25 dBm of effective power output (EIRP) or 350 milliwatts.
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They drive around, stop at specific locations chosen for particular purposes, and use a standard laptop 802. 11g card, a newer but not fancy 802. 11n adapter, a 300 mW laptop card with an external 5 dBi antenna mounted on the car from which they test, a Ruckus router, and various cell data modems, among other devices.
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