Netgear HA501 User Manual download pdf (Page 7)

Wireless Channel Selection

IEEE 802.11a utilizes 300 MHz of bandwidth in the 5 GHz Unlicensed National Information Infrastructure (U-NII)

band. Though the lower 200 MHz is physically contiguous, the FCC has divided the total 300 MHz into three distinct

domains, each with a different legal maximum power output.

U-NII Band Low Middle High

Frequency (GHz) 5.15 – 5.25 5.25 – 5.35 5.725 – 5.825

Max. Power Output 50 mW 250 mW 1W

Note: The high band is not supported in HA501 Wireless Adapter.

IEEE 802.11a uses Orthogonal Frequency Division Multiplexing (OFDM), a new encoding scheme that offers certain

benefits over a spread spectrum in channel availability and data rate. The 802.11a uses OFDM to define a total of 8

non-overlapping 200 MHz channels across the 2 lower bands; each of these is divided into 52 subcarriers and each

carrier is approximately 300 KHz wide. By comparison, 802.11b uses only 3 non-overlapping channels.

The HA501 user can use eight channels in non-turbo mode.

Turbo mode: OFF

Channel Frequency

36 5.18 GHz

40 5.20 GHz

44 5.22 GHz

48 5.24 GHz

52 5.26 GHz

56 5.28 GHz

60 5.30 GHz

64 5.32 GHz

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Netgear HA501 User Manual Page 7