CF210SP AM/FM Stereo Radio Kit DIY Electronic Portable Receiver TDA2822 TA7642 CD9088

CF210SP radio is a unique FM AM two-band radio(FM frequency range:76-108MHz; AM range of 525-1605KHz) With a simple circuit, the assembly of high success rate, better selectivity and other advantages. Amplifier circuit using TDA2822, the sound of good sound quality, and so on. A great practical project for the electronic enthusiast  Amplifier circuit using TDA2822, the sound of good sound quality, and so on. - FM band uses CD9088 chip, and SMT components package, 76-108MHz receiving frequency range. - AM wave band uses TA7642 IC, 525-1605KHz receive frequency range. 1. Frequency Modulation (FM) section CD9088 is a dedicated single-chip FM radio chip, Its simple external circuit, the circuit was built frequently 70KHZ phase locked loop system, selectively implemented by active RC filter, mute circuit can be suppressed non-IF signal and the IF signal is too weak. FM signal input circuit rod antenna C8 / C10 and L1 IC1 11, 12 feet into the mixer circuit, local oscillation circuit uses