Specifications

Crestron Best Practices RF Products

Reference Guide – DOC. 6689E Best Practices – RF Products

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Wi-Fi Channel Allocation Map

By physically separating the networks, the amount of interference among networks

on the same channel is reduced. A standard channel map cannot be created for these

installations because multiple networks reside on each channel. Channels 1, 6, and

11 are usually chosen for Wi-Fi networks because they are the only three

non-overlapping Wi-Fi channels. 802.15.4 channels 15, 20, 25, and 26 do not

overlap with Wi-Fi channels 1, 6, and 11; therefore, channels 15, 20, 25, and 26 can

be used on 802.15.4 networks in conjunction with this scheme. For this scheme to

function well, however, there must be low interference across the entire 2.4 GHz

band.

Installing and Configuring RF Gateways

The physical location of the RF gateway in relation to the connected wireless devices

must be considered for successful installation. When installing an RF gateway,

adhere to the following guidelines for optimum performance.

Location

Place the gateway in a location as follows:

• On the same floor as the wireless devices

NOTE: For Wi-Fi networks, there should be no more than one wall

between the gateway and wireless devices. Both the thickness and material

in the obstruction determines how much signal can pass.

• Above the height of most furniture

• Away from large metal objects (such as an AV rack and televisions)

NOTE: Plasma technology also produces RF interference.

• At least 12 feet from all other gateways on adjacent channels

NOTE: 802.11 channels can be adjacent to 802.15.4 channels as shown in

the channel map worksheet on page 12.

• At least 3 feet apart for 802.15.4 gateways on non-adjacent channels

• At least 6 feet apart for 802.11 gateways on non-adjacent channels