Translation guide
The English term "radio control" refers to the technology of controlling a device remotely using radio signals. In Japanese, this concept is expressed through specific compound nouns and related phrases, depending on whether you're talking about the system itself, the act of controlling, or the hobby.
radio control (system)
Often abbreviated to ラジコン in casual contexts.
Referring to the technology or system that enables remote control via radio waves, such as in model vehicles or industrial equipment.
The most direct and common translation, used as a noun. Often abbreviated as ラジコン in casual contexts.
This car moves by radio control.
A more technical term, often used in aviation or military contexts. Literally 'wireless piloting'.
Drones are flown by radio control.
Means 'remote operation' and can include radio control, but is broader (e.g., infrared, internet). Used in robotics and machinery.
This robot can be operated by remote control.
Talking about the pastime of building and operating radio-controlled cars, planes, boats, etc.
The common abbreviation for ラジオコントロール, used as a noun for both the hobby and the models themselves. Very natural in casual speech.
I enjoy radio control on weekends.
Explicitly refers to radio-controlled models. Useful when distinguishing from other types of models.
Describing the action of operating a device remotely using radio signals.
A verb phrase meaning 'to operate by radio control'. The pattern is [device]をラジオコントロールで操作する.
Operate the crane by radio control.
Literally 'pilot wirelessly'. Used for vehicles, especially aircraft.
In everyday conversation about the hobby, ラジコン is far more common than the full ラジオコントロール. Use ラジコン for models and the activity, but stick to the full term in formal or technical writing.
無線操縦 specifically implies radio-wave control and is often used for vehicles (especially aircraft). 遠隔操作 is broader, covering any remote operation (e.g., via cables, internet). For model hobbies, ラジコン is best.
He collects radio-controlled cars.
I built a radio-controlled model airplane.
Pilot the airplane by radio control.