If you look in the product sheet of the TDA7021T ic circuit there are som numbers missing. Here's the data sheet:
http://www.ortodoxism.ro/datasheets/philips/TDA7021T_CNV_2.pdf
If you scroll down to page 9 you will a schematic of an FM radio. But look at the top of the schematic. At pin 5 there is a capasitor that doen't say how many Farrads it's supposed to have. I know you're supposed to calculate it depending on what frequenicies you want to recieve. But how? For exemple if i want it to recieve between 88-108 MHz. How do you calculate that?