Decibels Explained: dB vs dBm, Gain, and Attenuation Problems
Decibels can be super confusing when you're first learning electronics. In this video, I want to clear up the difference between relative Gain (dB) and actual Power levels (dBm).
We’re going to walk through the definitions together, derive the formulas so you actually understand where the numbers come from, and then solve a few real practice problems—including a "Cascaded System" design example just like you'd see on an exam.
I hope this helps make the math click for you. Let me know in the comments if you have any questions!