[Wireless] How to clean wifi-menu record

Go to execution folder
cd /etc/netctl/

type ls will show many record file
Ex:
wlan0-Netgear-XA

Remove the record file
rm wlan0-Netgear-XA

Reconnecting the wifi will need to input password again.
sudo wifi-menu

Reference:

• [SOLVED] How to make wifi-menu forget a network

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[DFS] Test DFS in the Lab

When radar detect disturbance, the DUT will switch to another channel.

This is DFS testing topology. SG send disturbed signal to DUT, and watch channel which will switch to another on oscilloscope.
WiFi card connect by wire. So SG can add 5 db power to send disturbed signal.

                  +--------------+          +--------------------+
                  | Oscilloscope |          |Signal Generator(SG)|
                  +-------+------+          +----------+---------+
                          |                            |
                          +---------+------------------+
                                    |
+---------+          +---------+    |    +---------+
|         |          |         |    |    |         |
|   CPE   | <------> |   DUT   | <--+--> |   PC    |
|         |          |         |         |         |
+---------+          +---------+         +---------+


    +                                          +
    |                                          |
    |                 Iperf                    |
    +------------------------------------------+

EURO : test band2 & band3 for 20MHz / 80MHz
US : test band3 for 20MHz / 40MHz / 80MHz

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[Wireless] How to connect wifi by command

Install package
pacman -S iw

Scan SSID
sudo iw dev wlp3s0 scan | grep SSID
Connect to SSID
sudo iw dev wlp3s0 connect Happy-Together key 0:12345
Get IP
dhclient wlp3s0
Reference:

• Wireless network configuration
• Using iw command to link AP

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