Re: [WISPA] 2dbi vs 3dbi vs 5 dbi vs 100mw vs 400mw

Thu, 13 Nov 2014 10:26:25 -0800

To double the communications distance (everything else holding steady) requires an additional 6 dB. Knowing this, you can do the math with the various antenna gains and power levels to determine performance.

Regards,

Jack Unger
WISPA FCC Technical Consultant
On 11/13/2014 10:15 AM, Colton Conor wrote:
We are comparing multiple SOHO routers and modems that have the same Broadcom chipsets. All of them have 802.11N 2x2 configuration. The only differences between them are if they have internal or external antennas and the gain of the antennas (either 2, 3, or 5dbi ratings). In addition, some sell a high powered wifi radio (400mw) while others have the basic (100mw).

How much a difference does each of these hardware features make in overall wifi performance?


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Jack Unger - President, Ask-Wi.Com, Inc.
Author (2003) - "Deploying License-Free Wireless Wide-Area Networks"
Serving the WISP Community since 1993
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