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

DMR Codeplug for Tytera MD-380

At our radio club meeting on Monday night, I talked about DMR radio, the fastest growing digital format on VHF/UHF. Wow, did I get a positive response! There is a lot of interest in this topic and many of our members are out buying DMR radios and getting on the air. My presentation is available … Read more

Colorado (W0C) SOTA Activators

Here’s the SOTA activator scores for Colorado (W0C). I have to admit that I like checking this to see how everyone is doing. Some of it is friendly competition but mostly its enjoying the accomplishments of my fellow SOTA enthusiasts. We’ve got 10 “Mountain Goats” in Colorado now, with 1000 or more points. Carey, KX0R … Read more

More Power For VHF SOTA

For years now, I’ve been doing Summits On The Air (SOTA) activations using VHF and higher frequencies. The GO TO band/mode for VHF SOTA is 2-meter FM because of its overall popularity. Just about everyone has a 2m FM radio (well, almost everyone). Still, if you are on a remote peak you may not find … Read more