LA3ZA Radio and Electronics

The last issues of QEX have featured two interesting articles by Gary Cobb, G3TMG. He outlines the advantage of using Zolotarev designs for ...

Does the world need more Arduino clocks? Maybe not. But I needed another Arduino project as I had made a K3NG morse keyer . I love this ke...

This small VHF APRS tracker can easily be improved with some simple measures: The 1 Watt of output power is often too little to reach th...

Powerpole voltage and current monitoring is quite nice to have. One can buy commercial meters, but due to the availability of nice and che...

My poor-man's 10 MHz reference based on the Ublox Neo-7M GPS module didn't always receive GPS satellites. Since I rely on receptio...

DX-expeditions love their K3s. And I love my K3. But look closely at the MENU button and you will find the marks of someone who literally ...

0.33 uF X2 capacitors which measured only 0.097, 0.1, and 0.118 uF. Many devices now use a capacitor power supply thus saving the space...

I got my AP510 APRS tracker a little more than a year ago . It kind of worked, but not very well in my car. But after the tracker got a ...