通 信 圏(つうしんけん)

つうしんけん

noun

coverage area; communication range

technical

1. coverage area; communication range; signal range

The geographic area within which a wireless device can send and receive signals. Used for mobile phones, radio, Wi-Fi, and other wireless communication.

通信圏(つうしんけん)外(がい)で電話(でんわ)が使(つか)えない。

The phone doesn't work because it's out of coverage.

山(やま)の奥(おく)では通信圏(つうしんけん)に入(はい)れないことが多(おお)い。

Deep in the mountains, you often can't get into a coverage area.

トンネルを抜(ぬ)けてやっと通信圏(つうしんけん)に戻(もど)り、メッセージが一斉(いっせい)に届(とど)いた。

After leaving the tunnel, I finally got back into coverage and all my messages came through at once.

A compound of 通信(つうしん) (communication, telecommunications) and 圏(けん) (sphere, zone). Commonly encountered when traveling to remote areas or underground locations where mobile phone signals are weak or absent.

Common collocations

通信圏(つうしんけん)外(がい): out of range, out of coverage
通信圏(つうしんけん)内(ない): within range, in coverage
通信圏(つうしんけん)に入(はい)る: to enter a coverage area
通信圏(つうしんけん)から外(はず)れる: to go out of coverage

Related words

圏外(けんがい): out of range — the shorter, more casual term displayed on Japanese phones when there is no signal
圏内(けんない): within range — the opposite of 圏外(けんがい)
電波(でんぱ): radio waves, signal — the physical signal itself

Related Words

Related: 圏外(けんがい) (out of range)

Antonym: 圏内(けんない) (within range)

Related: 電波(でんぱ) (radio waves, signal)

general

Added 2026.5.5 0:32 · Revised 2026.9.2 13:02

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