The existing antenna was connected to the TEA5767 module. The radio module outputs stereo audio, but [Marcus] was content with using just a mono channel, as it would be used in his workshop.

Heinz Lindenmeier, Leopold Reiter, Ashraf Ramadan, Jochen Hopf, Stefan Lindenmeier, A New Design Principle of Active Receiving Antennas Applied with a High Impedance Amplifier-Diversity-Module in a ...

The proposed 28pin DIL module includes a surface-mount ATmega328, plus an Espressif ESP8285 for the Wi-Fi interface, a Wi-Fi antenna and 2Mbyte of flash memory. An integrated push button and ...