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.
このジャマーはGPS信号を遮断します。
This jammer blocks GPS signals.
A more formal or descriptive term meaning 'jamming device'. Used in news or technical reports.
警察は違法な電波妨害装置を押収した。
The police seized an illegal radio jammer.
Specifically a 'radio wave jamming device'. Used in technical or military contexts.
軍は敵の通信を遮断するために電波妨害機を使用した。
The military used radio jammers to disrupt enemy communications.
A device specifically designed to interfere with radar systems.
The standard term for a radar jammer, combining the loanwords 'radar' and 'jammer'.
戦闘機はレーダージャマーを装備している。
The fighter jet is equipped with a radar jammer.
A more descriptive term for a radar jamming device, often used in formal writing.
その艦船は最新のレーダー妨害装置を搭載している。
The ship is equipped with the latest radar jamming device.
A device that blocks mobile phone signals.
The most direct term for a cell phone jammer, commonly used in news and product descriptions.
試験会場で携帯電話ジャマーが使われた。
A cell phone jammer was used at the exam venue.
A shorter, more formal term for a mobile phone jamming device.
劇場では携帯妨害装置が設置されていることがある。
Mobile phone jammers are sometimes installed in theaters.
A device that blocks GPS signals.
The standard term for a GPS jammer, widely understood in technical and consumer contexts.
GPSジャマーはカーナビの動作を妨害することがあります。
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.
日本ではジャマーの使用は法律で禁止されています。
In Japan, the use of jammers is prohibited by law.