When the device is powered-on it will display the main menu. Use the UP / DOWN arrow keys to highlight the ‘RADAR SIM (DFS)’ option and then press the ENTER key to move to the next screen.

This is the primary menu for DFS Testing. Here you can select which DFS channel to test, the radar type (i.e. pulse pattern / waveform), and whether to transmit just the selected radar type or sequentially traverse all of them. We recommend starting-off with ‘Radar Type: FCC 2 (or FCC 3)’. Also, though the traverse mode seems like a good idea but, in practice, doesn’t work as well. So, stick with ‘Single Radar Type’.

Single Radar Type

Here is an example of using ‘Single Radar Type’ mode. At first the transmitter is ‘PAUSED’ (see upper-right corner). When the ENTER button is pressed the device transmits a pulsing waveform and ‘ACTIVE’ is displayed in the upper-right corner. Pressing ENTER again will pause the transmission.

When the device is powered-on it will display the main menu. Use the UP / DOWN arrow keys to highlight the ‘AirHORN’ option and then press the ENTER key to move to the next screen.

This is the primary menu for AirHORN. Here you can select which Wi-Fi band to use, output power and which AirHORN mode to use. To change which Wi-Fi band to use, use the UP / DOWN arrow keys to select ‘WiFi Band’ and press the ENTER key to toggle between the 2.4x GHz and 5x GHz ISM bands. To change the output power, select ‘Power’ and press the ENTER key to cycle through available power outputs — 2 dBm through 18 dBm.

Also, in AirHORN mode there are 3 available ‘transmit’ modes — ‘Single’, ‘Traverse’ and ‘Pulse’ modes. Select one of the transmit modes and press the ENTER key.

Single Mode

Here is an example of using ‘Single’ mode — where you can select a channel in either the 2.4x or 5x GHz band and achieve close to 100% duty cycle on that channel (at the normal 22 MHz-wide channel width). When using the 2.4x GHz radio module you can choose from Wi-Fi channels 1 – 13. When using the 5x GHz radio module you can choose from Wi-Fi channels 36, 40, 44, 48, 52, 56, 60, 64, 149, 153, 157, 161, 165. There is also a TX mode option — the radio can transmit either 802.11 packets or raw RF energy. When transmitting packets, 802.11g is used by the 2.4x radio module and 802.11a is used by the 5x radio module. After specifying the channel and TX mode select NEXT and press ENTER.

The image below shows AirHORN in Single mode, using the channel 6 in the 2.4x GHz band and the power output set at 11 dBm. Pressing the ENTER key toggles transmission between PAUSED and ACTIVE. In the image below you can see that AirHORN is transmitting on channel 6.

Traverse Mode

Here is an example of using ‘Traverse’ mode — where you can automatically scan through the set of 2.4x GHz or 5x GHz channels. When using the 2.4x GHz radio module this mode will automatically traverse channels 1 – 13. When using the 5x GHz radio module this mode with automatically traverse Wi-Fi channels 36, 40, 44, 48, 52, 56, 60, 64, 149, 153, 157, 161, 165. There is also a ‘Speed’ option — when ‘Slow’ is selected then AirHORN will transmit for 30 seconds before moving on to the next channel. When ‘Fast’ is selected then AirHORN will transmit for 5 seconds before moving on to the next channel. After specifying the ‘Speed’ NEXT and press ENTER. As with Single mode, the next screen displays the current band, channel and output power. Pressing the ENTER key toggles transmission between PAUSED and ACTIVE.

Pulse Mode

Here is an example of using ‘Pulse’ mode — where you “burst” on a specific channel, and then ‘off’ for a set interval. Here the options are channel, burst duration (in seconds) and ‘off’ interval (in seconds). As with the other AirHORN modes, the next screen displays the current band, channel and output power. Pressing the ENTER key toggles transmission between PAUSED and ACTIVE.

When the device is powered-on it will display the main menu. Use the UP / DOWN arrow keys to highlight the ‘WifiPROBE’ option and then press the ENTER key to move to the next screen.

This is the primary menu for WifiPROBE. Here you can select which Wi-Fi band to use and how the channel analysis results will be displayed. To change which Wi-Fi band to use, use the UP / DOWN arrow keys to select ‘Band’ and press the ENTER key to toggle between the 2.4x GHz and 5x GHz ISM bands.

In WifiPROBE mode there a 3 ways the channel analysis results can be displayed — ‘Traverse Channel Bars’, ‘Traverse Channel Table’ and ‘Selected Channels’. Select one of the analysis modes and press the ENTER key.

Traverse Channel Bars

Here is an example of using ‘Traverse Channel Bars’ — pressing the ENTER key toggles scanning between PAUSED and ACTIVE.. When using the 2.4x GHz radio module then WifiPROBE will traverse Wi-Fi channels 1 – 13. When using the 5x GHz radio module WifiPROBE will traverse Wi-Fi channels 36, 40, 44, 48, 52, 56, 60, 64, 149, 153, 157, 161, 165. As scanning occurs, WifiPROBE will compute the metric “% Available TX Time” for each channel. The higher the percentage the “healthier” the channel.

Pressing the ENTER key toggles transmission between PAUSED and ACTIVE. In the image below you can see that a narrow peak of RF interference at 2415 MHz blocks channels 1, 2, 3 — that is, causing their “% Available TX Time” to drop to 0%.

Traverse Channel Table

Here is an example of using ‘Traverse Channel Table’. This is similar to ‘Traverse Channel Bars’ above, except the results are presented in the form of a table (as compared to a bar graph).

Selected Channels

Here is an example of using ‘Selected Channels’. This mode differs from ‘Traverse Channel Bars’ and ‘Traverse Channel Table’ in that you specify which channels to traverse. It takes approximately 2 seconds to compute the “% Available TX Time” metric for each channel — i.e. close to 30 seconds to scan an entire band. But suppose you are really only interested in channels 1, 6, 11 — then specifying only these 3 channels can significantly shorten the refresh time between scans.