Translation guide
A device that blocks or interferes with signals, especially radio, radar, or communications. In Japanese, this is usually expressed with loanwords or descriptive compounds.
A device that intentionally blocks radio, radar, GPS, or other electronic signals.
The most common and direct loanword for 'jammer' in technical and everyday contexts.
This jammer blocks GPS signals.
A more formal or descriptive term meaning 'jamming device'. Used in news or technical reports.
The police seized an illegal radio jammer.
Specifically a 'radio wave jamming device'. Used in technical or military contexts.
The military used radio jammers to disrupt enemy communications.
A device specifically designed to interfere with radar systems.
A device that blocks mobile phone signals.
A device that blocks GPS signals.
The standard term for a GPS jammer, widely understood in technical and consumer contexts.
GPS jammers can interfere with car navigation systems.
In Japan, the use, sale, or possession of jammers that interfere with radio communications is illegal under the Radio Law. Be aware of this when discussing jammers in a Japanese context.
In Japan, the use of jammers is prohibited by law.
The ship is equipped with the latest radar jamming device.
Mobile phone jammers are sometimes installed in theaters.