OSC II

When it comes to oscillators, one technology that has greatly risen in popularity these past few years is DDS – Direct Digital Synthesis.  An increasing number of ham projects are using DDS chips, and it is possible to find RF-capable chips at relatively affordably prices.  With easy-to-use micro-controller development boards such as the Arduino, using … Read more

The Phase-Locked Loop (PLL) is one the most popular building blocks of any RF system.  Understanding the PLL unlocks many possibilities for the experimenter, however many hobbyists and those relatively new to electronics are put off by its apparent complexity.  While PLLs can seem daunting, by understanding the main principle behind PLL theory and dissecting … Read more