Blog

• Tom Carpenter
• October 18, 2017
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KRACK - It's Not As Bad As You Think

The recent reveal of the key reinstallation attack (KRACK) caused much stir in the wireless LAN community. This post addresses the reality of the attack, what should be done immediately, and lessons we should learn from it.

• Tom Carpenter
• September 27, 2017
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Low-Cost Handheld Spectrum Analyzer (RF Explorer)

The RF Explorer device is a useful tool for the price point. At under $300 U.S., the price is much easier to accommodate than other, more advanced, handheld spectrum analyzers. The device can be purchased here: http://rfexplorer.com/purchase/

• Tom Carpenter
• July 25, 2017
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Calculating RF Wavelengths

RF wavelength calculations can be made quite simple with two basic formulas. One for feet and the other for meters. This blog post provides the formulas and an Excel spreadsheet for calculating the wavelengths for each 20 MHz channel center frequency in the 2.4 GHz and 5 GHz bands.

• Tom Carpenter
• March 23, 2017
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Hotspot 2.0 Webinar Slides

The slides from the Hotspot 2.0 webinar on March 23, 2017 are available here.

• Tom Carpenter
• June 29, 2016
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Wireless Networks – The 802.11 Series – Wi-Fi Alliance

Our next post is about the Wi-Fi Alliance and other regulatory agencies that play an important role in implementing and monitoring wireless networks.

• Tom Carpenter
• June 06, 2016
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802.11 Wireless Networks

Learn the basics of 802.11 wireless networks(WLANs)

• Tom Carpenter
• May 13, 2014
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802.11 Beacon Intervals – The Real Story

A realistic look at 802.11 beacon intervals and their purposes. Great knowledge for those studying for CWAP!

• Tom Carpenter
• April 29, 2014
• 

Why Does the OSI Reference Model Matter?

A description of the Open Systems Interconnection (OSI) model, why it's important, and an overview of its uses within the wireless industry.

• Tom Carpenter
• July 05, 2012
• 

802.11ac (VHT) - Just the Facts

When a new development comes along, related to any technology, the proper foundation must exist if we are to understand it well. Today, I want to present the basic facts related to the new 802.11ac draft amendment of the 802.11-2012 standard. The purpose is to answer the five most common questions asked about 802.11ac:

• Why create a new physical layer (PHY)?
• In what frequency band will the PHY operate?
• What new capabilities or technologies are introduced?
• Who will benefit from it?
• When will we see it?