TCO-787YH50.000MHZ TCO-787ZH 37.500MHZ TCO-787ZHW(32.000MHZ) TCO-787ZHW(66.0MHZ) TCO-7987X1A 16.384M TCO-7987X1A16.384M TCO-7SJ5-10MHZ TCO-901H TCO-903A10MHZ TCO-903A-12.8MHz