Cisco Cisco Aironet 350 Wireless Bridge Information Guide
Q. Can the radios be damaged if they are operated without the antennas
attached?
attached?
A. Some radio equipment manufacturers specifically warn against this because it damages the
transmitter. Most pieces of amateur or commercial radio equipment carry this warning
because they operate at a much higher transmitter power. The reflected wave standing wave
ratio (SWR) caused by the lack of a proper antenna or load can damage the final amplifier
stage known as the power amplifier (PA).
transmitter. Most pieces of amateur or commercial radio equipment carry this warning
because they operate at a much higher transmitter power. The reflected wave standing wave
ratio (SWR) caused by the lack of a proper antenna or load can damage the final amplifier
stage known as the power amplifier (PA).
For Cisco Aironet equipment, the transmitter power output is 100 mW for the 350 series and
30 mW for the 340 series, so damage is unlikely but possible. If you absolutely have a
requirement to run the devices without antennas, it is recommended that you turn the
transmitter power down to 1−5 mW or use a 50−52 ohm "dummy load," just to be safe.
30 mW for the 340 series, so damage is unlikely but possible. If you absolutely have a
requirement to run the devices without antennas, it is recommended that you turn the
transmitter power down to 1−5 mW or use a 50−52 ohm "dummy load," just to be safe.
Warning: Never connect the antenna port of one device directly into the antenna port
of another device since this could damage the devices.
Q. What are all the authentication mechanisms currently supported by
Cisco Access Points (APs)?
Cisco Access Points (APs)?
A. This is a list of authentication mechanisms currently supported:
WEP
♦
WPA− Personal and WPA2−Personal
♦
WPA−Enterprise and WPA2−Enterprise
Note: For more information on WPA, refer to WPA Configuration Overview.
♦
EAP authentication
♦
MAC authentication
♦
Q. Do I need a license to operate WLANs?
A. WLAN equipment operates in a 2.4 GHz and 5 GHz frequency spectrum which are license
free. In the United States, spread spectrum devices fall under Federal Communications
Commission (FCC) Part 15 of the rules that govern unlicensed devices. However, other
countries might require a license if you operate devices that are partially or completely
outdoors, such as point−to−point bridges. In addition, some countries might require the
system importer to obtain a telecommunications license to sell the product.
free. In the United States, spread spectrum devices fall under Federal Communications
Commission (FCC) Part 15 of the rules that govern unlicensed devices. However, other
countries might require a license if you operate devices that are partially or completely
outdoors, such as point−to−point bridges. In addition, some countries might require the
system importer to obtain a telecommunications license to sell the product.
Q. Can I use my wireless device on an aircraft?
A. Under current Federal Aviation Administration (FAA) rules, the use of wireless devices on
an aircraft is permitted if the aircraft is parked at the gate and the door is open, and if usage is
allowed in the airport. The device must not interfere with flight operation equipment such as
navigation radar, communications, or emergency services.
an aircraft is permitted if the aircraft is parked at the gate and the door is open, and if usage is
allowed in the airport. The device must not interfere with flight operation equipment such as
navigation radar, communications, or emergency services.
The use of wireless devices on an aircraft with the door closed, whether it is sitting at the
gate, taxiing, or in flight, is prohibited by the FAA and other Civil Aviation Agencies
worldwide. Wireless devices used on the aircraft (when the door is open at the gate) must
meet the requirements of the local country agency or have been granted a waiver by the
agency or airport authority.
gate, taxiing, or in flight, is prohibited by the FAA and other Civil Aviation Agencies
worldwide. Wireless devices used on the aircraft (when the door is open at the gate) must
meet the requirements of the local country agency or have been granted a waiver by the
agency or airport authority.