How Do You Change RC Radio Crystals?
Radio controlled cars, boats, helicopters and planes all have one thing in common, commands are sent to the receiver using radio waves. Newer RC systems use a “spread spectrum” for broadcasting and receiving signals, and these systems don’t use a traditional crystal set. However, older FM-based radio systems do use a matched set of crystals, one in the transmitter and one in the receiver. If two radio systems have the same frequency they can not be used at the same time, one will interfere with the other and cause an unsafe condition. One way to avoid this hazard is for one user to change crystals. Step 1 Locate the receiver crystal, it is silver in color and about the size of a pinkie nail. There is no standard location for the crystal but since receivers are often sold without crystals they are always accessable. Remove the receiver crystal by gently grabbing it with your fingers and pulling it straight out of the saddle. If you can’t get a good enough grip on the crystal with your f
