PT2399卡拉OK混音原理图，已经在实际生产中批量使用，效果良好,OK Karaoke PT2399 mixer schematics, has been in practical use in production quantities, the effect of good

卫星调谐器 DBS TUNER The TA1322FN is a wideband down-converter which can operate at input frequency ranging from 850 MHz to 2200 MHz. Intended primarily for use in satellite tuners, this IC includes an oscillator, a mixer, an IF amplifier and a P