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Welcome to our home on the Internet, where we can not only share information, but also interact with each other. If you are a visitor to the site, there are a number of things to view: our FAQ’sNetworking and Computing Tips, our CellStream Blog, and other fun reading can all be found in the drop down menus above.  The Training menu provides access to our coursesour course calendar, and learning services.  The Consulting Menu provides information on our consulting services and a place to meet our consulting and teaching team.  Registered CellStream folks and our clients will log in using their private credentials to access projects, calendars and discussions.

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The Signal to Noise Ratio (SNR) Calculation

Post Views: 860 Signal-to-Noise Ratio (SNR) is a measure of how strong a signal is compared to the background noise in a communication system. It is typically expressed in decibels (dB). The higher the SNR, the clearer and more reliable the signal. I often get asked, how is signal to noise calculated. Frankly the math

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Automatically Switch Configuration Profiles in Wireshark

Post Views: 205 As most of my readers, students, and clients know, I absolutely love Wireshark. I deeply am infatuated with Wireshark’s Profiles, more properly called configuration profiles. So much so that many years ago now, I set up the first Wireshark Profiles Repository. 100’s of thousands of downloads have resulted, and I hope I

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What does an Internet Speed Test actually test?

Post Views: 113 When you run a speed test, you are testing several key aspects of your internet connection. The purpose is to measure the performance of your connection to the internet in terms of download speed, upload speed, latency or delay, and jitter or delay variation. The problem is that not all speed tests

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What are the best Speed Test tools?

Post Views: 149 As many of you who have been in my classes, or are my clients, know, I am not a fan of the accuracy and meaning of speed tests. Perhaps I am being a little technical here. Over the next several posts, I want to provide some detailed information on Speed Tests. I

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Top 10 Tcpdump commands

Post Views: 165 It’s always tough to do these Top 10 posts. I mean, depending on your job, where you access the network, what it is you are trying to do, you may have some favorite tcpdump commands that I don’t show here. That said, lets take a look at some great tcpdump commands. By

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A Wi-Fi 7 Tri-Band USB Adapter now available on Amazon

Post Views: 208 That’s right folks. I have been searching and searching. I actually gave up for a while as the only thing available was PCIe based adapters. Well that all changed with a search today and this showed up: Here is the link. Keep in mind you need a Wi-Fi 7 router as well

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