Japan - Communications

International Dialing Code for Japan is +81.

VHF:

VHF is not normally used by yachts in Japan and you may not get an answer if you use it. Channel 16 is used for a lot of general chatter.

SSB:

There is a Japanese HAM radio net focused on maritime traffic:

Okera Net
21.437 USB
Daily  12:20 - 13:00 JST
Controller: JD1BBH Kazuko-san (some English)
Sub-controller: JA1IDQ  Numata-san (no English)
Sub-controller: JA1LSA  Homma-san (fluent English)
Website in Japanese: http://www.okeranet.com/

Phones/Internet:

It is possible to get short-term (under 90 days) and long-term SIM cards (data-only and voice+data), as well as “pocket WiFi” portable hotspots. Prices, options, and services differ by company, but the most important consideration is to get a SIM card or pocket WiFi that uses the Docomo network, because that has the best geographic coverage, especially away from land.

Sakura Mobile is preferred by many because it uses the Docomo network, provides excellent English-language support, and can deliver to anywhere in Japan.

Last updated:  August 2023