PLL stereo FM transmitter for 7W

This article will introduce you with the FM transmitter.The center frequency of this stereo transmitter is 88 MHZ so the antenna you use should be the  J type or its frequency is 88 MHZ,too.The voltage you use for the power supply is 15 V.But according our experience,12 V is the best voltage for this machine.The audio distortion  of PLL stereo fm transmitter is very low.It can usually be below 2%.There is an advice that if it is not connected with the antenna,you should not use it for a long time.The output frequency of this fm transmisor  in the center is 5MHz and the output impedance will be 50 Ohm.The weight of it is 1.6kg and I think it is suiable for many people.