Wi-Fi on a Boat
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'''Making shore-based Wi-Fi Internet work well on a boat.''' | '''Making shore-based Wi-Fi Internet work well on a boat.''' | ||
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== Common Problems == | == Common Problems == | ||
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* ''concentrating radio energy/sensitivity'' to/from the desired direction instead of wasting it in pointless directions, and | * ''concentrating radio energy/sensitivity'' to/from the desired direction instead of wasting it in pointless directions, and | ||
* ''reducing [[wikipedia:Co-channel interference | interference]]'' from other radio sources not in the desired direction (path). | * ''reducing [[wikipedia:Co-channel interference | interference]]'' from other radio sources not in the desired direction (path). | ||
| - | The improvement in antenna performance is referred to as ''[[wikipedia:Antenna gain | gain]]'', where a higher number indicates the amount of performance improvement expressed in ''[[wikipedia:Decibel | dBi]]''. ''It takes an increase of 6 | + | The improvement in antenna performance is referred to as ''[[wikipedia:Antenna gain | gain]]'', where a higher number indicates the amount of performance improvement expressed in ''[[wikipedia:Decibel | dBi]]''. ''It takes an increase of 6 dB to double range; e.g.,'' as compared to a typical 2 dBi antenna, an 8 dBi antenna has double the range. |
However, a highly directional antenna can be problematic on a boat, since it must be kept aimed accurately at the remote end of the connection, which can be difficult on a boat floating in the water (even when tied up). The width (angle) of the directional pattern (both vertically and horizontally) can be used to see how accurately the antenna must be aimed. | However, a highly directional antenna can be problematic on a boat, since it must be kept aimed accurately at the remote end of the connection, which can be difficult on a boat floating in the water (even when tied up). The width (angle) of the directional pattern (both vertically and horizontally) can be used to see how accurately the antenna must be aimed. | ||
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| - | | [[Image:Omni Antenna Patterns.svg]] | + | | [[Image:Omni Antenna Patterns.svg.png]] |
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=== Managing a Wireless Ethernet Bridge === | === Managing a Wireless Ethernet Bridge === | ||
| - | [[ Image:Wi-Fi Boat Permanent.svg|frame|right|Wi-Fi at top of sailboat mast]] | + | [[ Image:Wi-Fi Boat Permanent.svg.png|frame|right|Wi-Fi at top of sailboat mast]] |
When using a wireless Ethernet [client] bridge, [[wikipedia:IP address | IP addresses]] of networked clients on the boat (wired or wireless) are normally assigned by a shore-based [[wikipedia:Dynamic Host Configuration Protocol | DHCP]] server. | When using a wireless Ethernet [client] bridge, [[wikipedia:IP address | IP addresses]] of networked clients on the boat (wired or wireless) are normally assigned by a shore-based [[wikipedia:Dynamic Host Configuration Protocol | DHCP]] server. | ||
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=== Wired versus Wireless Clients === | === Wired versus Wireless Clients === | ||
| - | :[[ Image:Boat Wi-Fi Wired vs Wireless.svg]] | + | :[[ Image:Boat Wi-Fi Wired vs Wireless.svg.png]] |
''Note:'' In order to minimize possible interference, a ''boat Wi-Fi access point should ideally be on a different minimally-overlapping channel (1, 6, 11 in the USA) from the shore access point''. | ''Note:'' In order to minimize possible interference, a ''boat Wi-Fi access point should ideally be on a different minimally-overlapping channel (1, 6, 11 in the USA) from the shore access point''. | ||
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* [http://www.wifimarine.org/ Wi-Fi Internet solutions for boaters and marinas] | * [http://www.wifimarine.org/ Wi-Fi Internet solutions for boaters and marinas] | ||
* [http://www.radiolabs.com RadioLabs] | * [http://www.radiolabs.com RadioLabs] | ||
| - | ** [http://www.radiolabs.com/products/wireless/wireless-marine-antenna.php WaveRV Marine] (complete USB system | + | ** [http://www.radiolabs.com/products/wireless/wireless-marine-antenna.php WaveRV Marine] (complete USB system) |
* [http://www.marinenet.net/Wifi/Default.htm MarineNet Wireless] | * [http://www.marinenet.net/Wifi/Default.htm MarineNet Wireless] | ||
** [http://www.marinenet.net/satantennatips.htm WiFi Antenna Installations] | ** [http://www.marinenet.net/satantennatips.htm WiFi Antenna Installations] | ||
* [http://www.hyperlinktech.com HyperLink Technologies] | * [http://www.hyperlinktech.com HyperLink Technologies] | ||
| - | ** [http://www.hyperlinktech.com/ | + | ** [http://www.hyperlinktech.com/item.aspx?id=2165 2.4 GHz 8.5 dBi Omni Marine Antenna] (3ft RP-SMA Plug Connector) |
** [http://www.hyperlinktech.com/web/12v_to_48v_dc-dc_converter.php 12 Volt to 48 Volt DC/DC Boost Converter] (for Power over Ethernet) | ** [http://www.hyperlinktech.com/web/12v_to_48v_dc-dc_converter.php 12 Volt to 48 Volt DC/DC Boost Converter] (for Power over Ethernet) | ||
* [http://www.linksys.com Linksys] | * [http://www.linksys.com Linksys] | ||
