Un observator atent (radioamator olandez PE5PVB) a gasit ca in radiourile auto se utilizeaza cipul TEF6686 de la NXP Semi. Si apoi a gasit pe la chinezi modul de tuner complet, asa ca fost doar un pas sa puna butoane, ecran si cu softeala aferenta, a iesit un aparat radio AM si FM.
https://spectrum.ieee.org/hacking-a-car-radio-chip
Din foaia de catalog a lui TEF6686:
The Low IF Tuner HIgh performance One chips, TEF6686 and TEF6688, are single-chip radio ICs including an AM/FM radio tuner and software-defined radio signal processing. They extend NXP Semiconductors’ broad, industry-proven car radio single tuner portfolio, offering outstanding radio performance with the widest range of features and state of the art software algorithms at optimized system costs. (https://www.nxp.com/products/audio-and-radio/hybrid-radio-and-audio/low-if-tuner-high-performance-one-chip:TEF668X)
Sursa de pe github https://github.com/PE5PVB/TEF6686_ESP32
O scurta demonstratie de functionare https://www.pe5pvb.nl/tef6686/
Pe AliExpress cauti dupa 'TEF6686 Full Band FM AM Radio Receiver', costa de la 300 de lei.
