i want to build a synthesizer by NE564 for 3-30MHz .i read the datasheet completely but i dont know how to set the range or how to design its loop filter.can u help me in those parts?
The best way is to use modern techniques like DDS using Analog Devices' AD9834 or AD9851 and get all the frequencies at turn of rotary encoder knob. You get many construction articles on this.