Hi there,
I have some questions here to ask. Please refer to the circuit diagram that I have posted.
It is a RF circuit for anti theft wireless system. But the problem is the receiver module. Here in the circuit diagram, it shows the connection without the pin number. I have referred to the data sheet and I assumed that the antenna is connected to the FM RF In, ground to GND. But I can’t figure out the other 2 more terminal, which is connected to the transformer.