NETGEAR 2409 manual Placement and Other Important Considerations

Installation Guide for the 9 dBi Omni-directional Antenna ANT2409

Placement and Other Important Considerations

Before installing your wireless antenna, observe the placement considerations. Antenna placement dramatically affects potential coverage. Follow these guidelines to maximize coverage:

•Place the ANT2409 in a vertical position. Either right side up or up-side-down is Ok.

•Place the antenna in the middle of the coverage zone and at 1.5m or higher above the floor.

•Minimize obstructions around the antenna. Ideally there shall be a visual line of sight between the ANT2409 and the client antenna(s).

•High Ceiling: place the ANT2409 in the center of the room installed up side down on a pole or on the ceiling with the L shape bracket.

•Outdoors: Place the ANT2409 on a roof fixed on a pole 2m above the roof level, or fixed directly on the roof near the edge, or against a wall, or on top of a telephone box. In most of the cases one ANT2409 is sufficient because the multipath fading is low or acceptable. However in cases where the building density is high, or narrow streets, or direct echo from another building, etc. two ANT2409 can improve the wireless performance (throughput and range). This latter is applicable only if the wireless device has two RF ports.

NOTE: Ground cable is not provided but is required. Use AWG 10, UL 1015, Standard 600 V, 105°C, green or green/yellow insulation, 2 clips with a 5.5 mm inner diameter clamped at both ends, and cable no longer than 5 meters.

•Indoors: Place the ANT2409 above cubicle level, at the center of large room area preferred attached to the ceiling, a pole, or a column. Ideally, it should be located outside an IT data center or outside a room with multiple metal partitions. Use a NETGEAR antenna cable of up to 10 m length to connect the antenna to the wireless access point/router. In some situations one ANT2409 is sufficient because the multipath fading is low or acceptable and/or the client adapter wireless node provide spatial diversity. However in other cases where the multipath fading effect is medium to high two ANT2409 spaced by a few meters can improve the wireless performance (throughput and range). This latter is applicable only if the wireless device has two RF ports.

Indoor wireless propagation loss increases as follows:

•Wood building -- relatively little loss

•Floors in concrete -- some loss

•Reinforced concrete -- more loss

•Metal floor or reinforced concrete with a lot of metal pipes, metal air conditioning channel, etc. -- most loss

Getting Started with the ANT2409 1-5