PCS-Electronics

hai bro's and friends,

new member here and very new to radio electronic system...

need explaination about the car alarm transmit and receiver system,what are the diferent compare to other radio system...why are the transmiter have no antena ?

regards

they have a small ant inside the keyring transmitter

Hi there iam a new user here i need some schematic diagram of radio control trasmiter and reciever can u guyz help me?