What do the dots on the crystals mean? Are they important?
The dot indicates the cut of the crystal in relation to its true frequency, either centered exactly on the frequency or just above or below the frequency when viewed on a scope. With today’s level of tuning, it makes very little difference in overall performance. For top performance, in those models that require the absolute best, such as turbines and giant scale aircraft, avoid using oposite dots in the transmitter and receiver, such as a left dot in the transmitter and a right dot in the receiver. For the best performance they should be next to each other, a center and a right or left, or the same. The dot system is a way that JR users can fine tune their set up for optimum performance.
