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Re: Do wireless antennas work?
Posted by jp (more from jp) on Tue, 23 Aug 2005 06:32:32
In Reply to: Do wireless antennas work?, Mark, Mon, 22 Aug 2005 11:03:54
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An external antenna will increase your range by changing the shape of the radio signal coverage.
A stock stubby omni makes an antenna pattern like a donut. A high gain omni makes a more pancake shape. Wider coverage area, less energy expended covering steep up or down angles. A panel antenna directs the coverage in a particular direction, much like a worklight or floodlight. Any number of degrees of coverage angle are available. A dish or grill antenna directs the energy like a spotlight. Same amount of energy, just patterning the direction of coverage. Many of these dish/grille antennas come with stickers saying to stay two feet away when in operation for safety.
While a higher gain omni also creates a wider coverage area, it also receives interference from a wider coverage area as well. Not always a problem, but something professionals run into on a regular basis. I'm in the wireless ISP business.
Using high gain antennas with an amplified system can be illegal if you don't know the part15 rules and logarithmic math for figuring dBms.
Posts in this Thread:
- Do wireless antennas work?, Mark, Mon, 22 Aug 2005 11:03:54
- Re: Do wireless antennas work?, jp, Tue, 23 Aug 2005 06:32:32 <-- Viewing This Message
- Re: Do wireless antennas work?, Scott Paterson
, Mon, 22 Aug 2005 13:47:35 - Extending outdoor or indoor ? Either way, the good...., TKC, Mon, 22 Aug 2005 11:32:11
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