Did you ever wonder what frequencies cell phones use? I always though it was about 900 MHz but look at the table below to see a wide range of bands that are used. The matrix below meshes provider against technology. We can see that 5G distinguishes itself from the others in that it uses 28…
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Nationwide EmComm Radio Drill May 8
A nationwide EmComm Radio Drill is set for May 8, and we are having monthly Winlink trainings between now and then. Last Fall’s Drill attracted over 1,500 hams in 47 states to practice passing Red Cross traffic and it was written up in QST this month (copy attached). To be informed, pls join groups.io for…
SHARES, DHS and Winlink – Thanks Steve Waterman!
Many thanks to Steve Waterman (K4CJX) for his presentation on SHARES and DHS Emcomm planning. His presentation is available here. For more information contact Steve at k4cjx@comcast.net.
CQ: Calling any station
As the club web presence begins to evolve and grow, there’s a genuine opportunity for all club members to have a bigger impact. The driving force behind changing the format of our web site was to create a platform for members to communicate and share their experience. Your posts need not be long, nor technical….
Contingencies in Amateur Radio – Power Blackout
Here’s the scenario… you’re the net control operator for your club’s weekly net and just as you finish the preamble and are ready to pause for check-ins, the power at your home QTH goes out. You have no idea if it will be out for a minute or an hour or a day. If there’s…
Amateur Radio in the Days of Covid
A year ago, I volunteered to serve as the president of the Cascades Amateur Radio Society (CARS). I’ve been a ham about 11 years, but it’s not really my primary hobby or technological love (I’m still a Technician Class operator). But I’ve VERY much been taken by the community and the history of the radio…
LTspice–Computer Simulation of Analog Electronics Designs
EDITOR’S NOTE: I am introducing you to LTspice now because I plan to bring blog posts in the future in which you will be able to leverage LTspice to your advantage. Please download it and find various YouTube tutorials on its use. LTspice is free. Many amateurs are electronic enthusiasts and routinely design and build…
1000 FT8 Contacts in 14 days
As a new ham, there are many projects and areas of this hobby that I want to jump into all at once, and the idea of exchanging world wide digital text messages via the FT8 mode was one of the first. Make no mistake, though the amateur radio community might downplay the significance of ‘just…
Scanned Data — Part 2
In the first part (What is a “Scanned Data” Utility, Anyhow) we learned about the concept of quickly and conveniently transcribing plot data into a tabular form with precision. In this second part we will examine the use of a recommended scanned data utility—Plot Digitizer by Joseph Huwaldt. The first step in our examination of…
What is a “Scanned Data” Utility, Anyhow?
In the process of characterizing a physical device or process, the original performance specifications are published in a plot format such as illustrated in Figure 1. But suppose you need to have the data in a tabular format such as that of Table 1. How do you go about doing the conversion? The most obvious…