Using AirPort Utility to collect RSSI

Apple developed a utility to manage your Wi-Fi network and assist connecting to Airport base stations.  It is NOT installed by default in iOS and there are some settings that may need tweaking each time you want to run the application.  The AirPort Utility has several features, but the ones I’m really interested in are:…

WirelessHART Spectrum

WirelessHART is based on the IEEE 802.15.4-2006 standard – meaning specific flavours of the standard have been adopted by WirelessHART.  This blog with address the channel and modulation characteristics defined in the IEEE 802.15.4-2006 standard and which features and combinations were specifically adopted by WirelessHART. The 802.15.4 standard titled “Wireless Medium Access Control (MAC) and…

ZigBee/BLE packet capture with NXP KW41Z

ZigBee/BLE packet capture with NXP KW41Z   Quick blog to document the procedure I used to install the software required to packet capture ZigBee and BLE traffic using the NXP KW41Z. You can find hardware details about the NXP KW41Z on the NXP website.  There are a few different hardware models, so be sure to…

CBRS in Canada?

What is CBRS? CBRS refers to the Citizens Broadband Radio Service defined by the FCC in Title 47 Part 96 subpart F, which specifies the use of a 150MHz wide block of spectrum 3550–3700 MHz.  This block of spectrum resides within the highly coveted mid-band spectrum, combining high throughput and high propagation through objects such…

Extreme Site Survey AP Configuration

Extreme Site Survey AP Configuration This post captures useful commands when performing site surveys for configuring access points from Extreme Networks (formerly Aerohive).  Sometimes events happen in the field and you need to factory reset or re-configure an AP in the middle of a site survey.  What follows are some notes about relevant commands to configure an…

BLE Overview

BLE Overview This is a quick overview covering the highlights of Bluetooth® Low Energy (BLE) referenced in one place. As with all first-time Bluetooth blogs, there is a mandatory requirement to describe the story of how Bluetooth earned its name.  The name ‘Bluetooth’ is a head-nod to King Harold Blatand of Denmark.  King Harold was…

With Extreme Power comes Extreme Responsibility

With Extreme Power comes Extreme Responsibility Have you ever wondered why RSSI values from validation surveys don’t match your predictive design?  Have you wondered why changing the AP transmit power doesn’t always correspond with RSSI values for the client? There are some subtle nuances to be aware of when setting the transmit power on Extreme…

WirelessHART Overview

WirelessHART Overview WirelessHART™ is a protocol developed to form self-optimizing, self-healing, time synchronized mesh networks. It easily extends wireless capabilities from HART® technology allowing compatibility with existing HART devices, commands, and tools.  It’s based on the IEEE 802.15.4™ standard and operates in the 2.4 GHz ISM band allowing for near global operation.  HART version 7, maintained…

Extreme Packet Capture

With some of the new features coming down the pipe with WiFi6, affectionately known as “11ax”, it may prove a little more challenging to capture all the frames.  This blog describes the process to capture WiFi6 traffic using WiFi6 radio interface(s) of an Extreme (formerly Aerohive) access point. Photo by natsuki on Unsplash   It’s often thought that…