Top Five Underrated K0NR Blog Posts

Normally at the end year, I list the five blog posts that got the most hits during the year. It turns out that this list does not change a lot from year to year. For completeness and consistency, these are the top five posts for 2017, in rank order: Choose Your 2m Frequency Wisely , … Read more

Amateur Radio: Narrowband Communications in a Broadband World

For my day job in the test and measurement industry, I get involved in measurement solutions for wireless communications. Right now, the big technology wave that is about to hit is known as 5G (fifth generation wireless). Your mobile smartphone probably does 4G or LTE as well as the older 3G digital mobile standards. For … Read more

Radio Frequency Interference From 12V-to-USB Adapters

Many small electronic devices have switching regulators in them that can generate a bunch of Radio Frequency Interference (RFI). This is not my first encounter with RFI-spewing devices. See this article about a automotive 12V-to-USB adapter giving me trouble: This Interference Seems To Follow Me Everywhere I recently bought a couple of adapters that are … Read more