i used ckt on bread board and calculated on dso …the output had only 800mv ac element of 40mhz even though other section was dc part of all over 4v . i utilized Vcc of 5v . what I need is atleast 4v peak to peak and in addition 9v peak to peak if Vcc is 9V …waiting for speedy replyIt utilizes a quartz crystal to manage the oscillation frequency