Nilox 54Filtra: Tutti Lingua: Tutti Licenza: Tutti.Model MP-G-IN-01 NETGEAR WG511 54 Mbps Wireless PC CardFabbricante. Name: USIMP-G-IN-01NETGEARWG511 54MbpsWirelessPCCard.zip.Modello: DCZ 5.4 USB Mass Storage Device Digital Camera DriverFabbricante: Praktica Digital CameraTipo de dispositivo: Camera hdcSistemi Operativi: Win98 554.zipDimensione:1.1MBModello: WG511v2 NETGEAR WG511v2 54 Mbps Wireless PC CardFabbricante: NETGEARTipo de dispositivo: NetworkSistemi Operativi: Win98SE, WinME, Win2000, WinXP, WinXP (64 bit) NETGEAR.exeDimensione:19.7MBVersione:2.5.11.Model WU64 802.11g 54 Mbps Wireless USB Dongle Wireless-G.Model Skyrcer Wireless USB Stick 54 Mbps V.2 802.11b/g Wireless LAN. USB Wireless LAN Adapter 802.11g 54 Mbps Wireless USB Dongle Wireless-G.
Omni-Directional Antennas Applications, Radiation Patterns & Range. Bigger is not always better: Optimal choice of dipole antenna is determined by the relative positions of the access point and the clients, and range. Omni-directional antennas pickup stray 'interference' signals that can degrade performance. Range & Radiation Patterns of Antennas Radio waves do not penetrate obstacles very well.High-gain antennas have a flat radiation pattern: So, a larger antenna will only help for long range; it will not help if you have differing elevations. Use high power antennas to send a signal long distances to a very specific and focused point. The higher the gain, flatter the signal radiation pattern.Low power antennas send their signals to higher and lower elevations in local area: Everywhere within their 100-200 foot range.Antenna gain acts on both the transmit power and receiver sensitivity, so you are not only sending your signal further but you are also able to receive much weaker signals within its line of site.Gain of an antenna is a measure of its enhancement of signal strength: Gain is measured by the dBi rating.Calculating Gain from addition of an antenna:. 3 dB rule: For every 3 dB increase in level, the power is doubled.
For every 3 dB decrease, the power is cut in half. 10 dB rule: Every 10 dB increase in level results in 10 times the power, and every 10 dB decrease in level results in 1/10 the power.
Try a driver checking tool such as DriverIdentifier Software. As there are many drivers having the same name, we suggest you to try the Driver Tool, otherwise you can try one by on the list of available driver below. Please scroll down to find a latest utilities and drivers for your SURECOM EP-9428-g 802.11g 54M WLAN CardBus Adapter driver.
by various amounts: See table on right side of.: If a cable connects your device to the antenna, takeAntennas generally have greater coverage at the expense of range, and greater range at the expense of width of coverage area ('half-power beam width'). Therefore, which radiate the beam in all directions (on a horizontal plane) generally have gains no higher than 12dBi, while directional antennas can have gains up to 30dBi. As a general rule of thumb: The higher the gain, the narrower the beam width (coverage area). Half-power beam width is the specification of the antenna's coverage area. It is measured relative to the points at which the antenna's radiation drops to half its peak value.BELOW TABLE: Approximate 'Line of Sight' antenna range in free space (outside) from a standard 100mw power Wireless device with antenna both ends at given gain level.
See also: Antenna gainWireless rangeThe table is only a rough guide as conditions from site to site vary wildly. This assumes absolutely no objects between both ends of the range - no trees, buildings or hills. Once you add obstructions the range drops dramatically.
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For instance, within a building with concrete walls the range can drop to 30-50m.100mW device + antenna0dB200m4dB440m7dB620m10dB1.2Km13dB2.8Km16dB5.0Km20dB12.5Km24dB31KmINDOORS / BUILDINGS See also this.Metal reflects the signal. Modern houses may also have foil backed plasterboard to meet fire regulations and modern glass has a metal content.This said, as a general rule 802.11g/ WiFi devices will cover a house quite well, not guaranteed though. Bear in mind if your WiFi antenna is placed down behind the computer case it already has two layers of steel and a wall to penetrate first.Indoors coverage: We recommend using the low power and using more wireless repeaters spaced every 100 feet to properly cover an area.Laptops only transmit 100 feet so there is nothing gained by having a high gain antenna on one end when the laptop can't even talk back more than 100 feet.Making sure that all repeaters are no more than 100 feet from each other ensures that laptops can always see a repeater or two. DBi dB, dBm dB(mW): Defined & explained dBi dB(isotropic): The forward gain of an antenna compared with the hypothetical isotropic antenna, which uniformly distributes energy in all directions. Linear polarization of the EM field is assumed unless noted otherwise.dBm dB(mW): Power relative to 1 milliwatt. When used in audio work the milliwatt is referenced to a 600 ohm load, with the resultant voltage being 0.775 volts. When used in the 2-way radio field, the dB is referenced to a 50 ohm load, with the resultant voltage being 0.224 volts.
There are times when spec sheets may show the voltage & power level e.g.120 dBm = 0.224 microvolts.' DBm' is used to compare against watts. There is no direct correlation between watts and dBi. Dbm is logarithmic and mw is linear.The term 'dB' is not a reference but is rather a method and a measurement standard. DB must be used against a standard, hence 'dBm' is used to compare against watts.