Netgear UTM25S Reference Manual 3.0.1-124 - Page 583

ProSecure Unified Threat Management (UTM) Appliance Table 149. Radio Settings screen settings (continued) Field Descriptions Channel Specify the channel you wish to use on your wireless LAN by making a selection from the drop-down list. The wireless channels and frequencies depend on the country and wireless mode. The default setting is Auto. Note: It should not be necessary to change the wireless channel unless you notice interference in the network (indicated by lost connections or slow data transfers). If this happens, you might want to experiment with different channels to see which is the best. For more information, see Operating Frequency (Channel) Guidelines following this table. Note: For more information about available channels and frequencies, see Physical and Technical Specifications on page 673. Default Transmit Power From the drop-down list, select the default transmit power: • Full. This is the default setting. • Half. • Quarter. • Eighth. • Minimum. Note: If the country regulation does not allow the transmit power that you select, the power is automatically adjusted to the legally allowed power, which is then displayed in the Transmit Power field. WARNING: When you have changed the country settings, the wireless network module (not the UTM9S or UTM25S) will reboot when you click Apply. 3. Click Apply to save your settings. Operating Frequency (Channel) Guidelines You should not need to change the operating frequency (channel) unless you notice interference problems, or are setting up the UTM9S or UTM25S near another wireless access point. Observe the following guidelines: • Wireless access points use a fixed channel. You can select a channel that provides the least interference and best performance. In the United States and Canada, 11 channels are available in the 2.4-GHz operating frequency and 13 channels in the 5-GHz operating frequency. • If you are using multiple wireless access points, it is better if adjacent wireless access points use different channels to reduce interference. The recommended channel spacing between adjacent wireless access points is 5 channels (for example, in 2.4-GHz operating frequency, use channels 1 and 6, or 6 and 11). Wireless Network Module for the UTM9S and UTM25S 583