NanoVNA na Restauração de Rádios Antigos: Tanques de Sintonia, Oscilador Local e FIs

NanoVNA became known primarily as an antenna analyzer, but its applications go far beyond that. In this video, I show how this tool can be used in the restoration and analysis of old radios, allowing you to visualize the behavior of the tuning tanks, the local oscillator, and the intermediate frequency (IF) transformers. Throughout the tutorial, I present a practical and accessible approach, focused on identifying the resonance frequencies of LC circuits found in superheterodyne receivers. The goal is not to explore all the advanced features of NanoVNA, but to demonstrate how it can assist in the diagnosis, alignment, and verification of the operation of these circuits quickly and efficiently. 📌 In this video you will see: • How to connect NanoVNA to tuning circuits and local oscillator; • Analysis of LC tanks in old AM/M radios; • Verification of tuning range and coherence of measurements; • Evaluation of IF transformers; • Limitations and precautions during measurements; • Influence of parasitic capacitances, cables, and assembly; • Practical applications of NanoVNA on the restoration bench. This content is aimed at radio amateurs, restorers, collectors, and electronics enthusiasts who want to incorporate NanoVNA into their maintenance and diagnostic toolkit. If you found this video helpful, please consider leaving a comment sharing your experiences with NanoVNA and restoring vintage radios. #NanoVNA #VintageRadio #RadioRestoration #AmateurRadio #Electronics #SuperHeterodyne #MediumWaves #AM #IF #LocalOscillator #LCTank #RF #PU2CLR