I needed to remove some RF noise from an air filter in the next room. When the fan turns on, the background noise raises my radio S meter by 2 S units. Like most of you, I tend to collect ferrite cores from random places. Unfortunately, the ferrite cores I …
A couple of weeks ago I got a new D-Star mobile radio. The radio is an Icom ID-4100, VHF/UHV. According to Icom, this rig is a D-Star[^1] entry-level radio. The ID-4100 has the same features as the ID-5100, with a smaller screen and only one VFO.
A couple of months ago I designed a convenient Battery Monitor board with a voltmeter, one Andeson PowerPole connector as well as a USB power connector. This board is suitable to turn any 7Ah, 9Ah SLA or Lithium battery into a convenient power source for indoor or portable operation. For …
Note This article was originally posted in 2019. The program fllog has evolved, and many things have changed since the first version. Please check the README file on GitHub to see how to install and use it. One of my favorite activities on the radio is making contacts using digital …
The Pi-Star has the capability of working across digital modes. This means you can use a C4FM (YSF) radio to talk on DMR and vice-versa. You can find the complete list of cross mode capabilities on your Pi-Star configuration page.
Since I got my ham radio license, I have participated in Field Day with the PAARA radio club in Palo Alto. PAARA is one of the area's large regional clubs. Their Field Day setup is one of the most impressive of the San Francisco Bay Area.
In a previous article I describe how I built a mobile Allstar node. I carry this node me with when I go to a meeting, or on a trip, leaving the node running in my car. California is a sunny state, and the inside of a car can get hot …