Check Point UTM-1 Edge User Manual page 300

Configuring Wireless Networks
In this field... Do this...
Each operation mode indicates a wireless protocol (such as 802.11g
Super), followed by the maximum bandwidth (such as 108 Mbps).
The list of modes is dependent on the selected country.
You can prevent older wireless stations from slowing down your network, by
choosing an operation mode that restricts access to newer wireless
stations.
Note: The actual data transfer speed is usually significantly lower than the
maximum theoretical bandwidth and degrades with distance.
Important: The station wireless cards must support the selected operation
mode. For a list of cards supporting 802.11g Super, refer to
http://www.super-ag.com.
This field only appears when configuring the primary WLAN, and it is
inherited by all VAPs and WDS links.
Channel Select the radio frequency to use for the wireless connection:
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Note: If there is another wireless network in the vicinity, the two networks
may interfere with one another. To avoid this problem, the networks should
be assigned channels that are at least 25 MHz (5 channels) apart.
Alternatively, you can reduce the transmission power.
This field only appears when configuring the primary WLAN, and it is
inherited by all VAPs and WDS links.
286
Automatic. The UTM-1 appliance automatically selects a channel.
This is the default.
A specific channel. The list of channels is dependent on the
selected country and operation mode.
Check Point UTM-1 Edge User Guide