Frequency range is 76-108MHZ. Both receive Universal FM FM station can be received school campus radio station. The kit FM scan radio pocket computers using special blocks, 16-pin dual flat package, the working voltage of 1.8-3.6V, the circuit includes a FM radio receiver from antenna to the frequency discriminator output audio signals of all the features, it also has search tuning circuit, the signal detection circuit, a mute circuit and compression frequency offset of the frequency-locked loop circuit. IF frequency of the circuit is designed to 70KHZ, peripheral circuits without intermediate frequency transformer, wherein the frequency is by an internal RC circuit IF filter to complete. Aircraft such as digital radio tuner that uses electrical tuning buttons ( +, -), in addition to the volume control buttons (VOL +, VOL-) and the power button (PW). This kit is not just welding assembly, as well as adjust their own hands and the coiled coil, more fun, this is the other simply assembly kit. The main advantage of using the headset also takes into account the student's classroom noise. After the circuit is powered on, press the power button, the circuit starts to work, press + to search for high-frequency or low-end press - radio frequency search, automatic search for radio signals, tuning automatically stops, then click on the Search button if The circuit continues to search for radio stations. color: blue Material: PCB+Electronic component Depending on the batch, the electronic components may have different colors, but this does not affect use. Package Contents: 1 * DIY Electronic Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.