Question: Do RC Cars and RC Subs Use the Same Radio Crystals?
Found in hobby-grade RC vehicles, the receiver and the controller each contain a radio crystal that is set to a specific frequency band and channel. Sold with Ready-to-Run vehicles, you can also buy pairs of radio crystals independent of the RC vehicle.
Answer: The crystal sets used in hobby-grade RC cars and trucks and those used in the radio systems of RC submarines and boats are interchangeable. Just be sure you are using a matched set of crystals in the controller and the receiver.
Radio Crystal Sets in Hobby RCs
With hobby-grade RCs the electronic components are able to accommodate more than one frequency at a time. Checking channels in use by other RC vehicles in the surrounding areas is necessary before journeying off in the water. If other RC drivers or submarine captains are running the same frequency, you'll need to switch out the crystals -- and you can take them from any of your hobby-grade RC vehicles.
Radio Crystal Sets in Toy RCs
The crystal sets in toy-grade RCs are built into the electronics and are therefore not removable or interchangeable. When dealing with toy-grade RCs you normally only have two frequencies available -- such as 27MHz and 49Mhz in the United States. Unless the sub has a switch that enables you to select different bands such as A, B, or C -- giving each frequency the ability to have up to three RC vehicles on a channel -- you'll have to wait your turn if other RC drivers or submarine captains are running on the same frequency in your area.