The parts to the right of the green capacitor are the FM radio transmitter. The parts between the 8 pin DIP and the transmitter are the resistor matrix. One capacitor, C5, is mounted on the back of the board, and one other capacitor, C11, had not yet been installed. It was later installed just below
A Simple FM Stereo Transmitter using ATTINY12 microcontroller is a post from: ATMega32 AVR