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66718:可以的,其实我连DDS都没有,直接用的LC振荡器和晶体VXO振荡器,加自制的毫伏表,测试过晶体滤波器等等。CD4069做放大,估计也就到2Mhz的样子。74HC04应该可以到10MHZ。....... (2013-01-27 15:29)