Radio Law in Japan and USB devices library

[IOjoecho]

Hi I am a Japanese new user of Pi3

I know my question my may be very silly. But i hope i could have answer from group.

1. Is the actual radio wave output/ operating frequency changed if we change the WiFi country Code?
If we set to “US” in japan, will it violate the Radio law in Japan?

2. And I do not have BCM2837 data sheet. I heard peripherals is same with BCM2835
BCM2835：0x7E20xxxx
​​BCM2837：0x3F20xxxx
So I just have to change the Top digit above and apply to BCM2835 peripherals data sheet?

Thank you.

[masafumi_ohta]

Hiya am also Japanese.just talking to you 日本語/English.

Hi I am a Japanese new user of Pi3

I know my question my may be very silly. But i hope i could have answer from group.

Please do not mind.問題ないです。

1. Is the actual radio wave output/ operating frequency changed if we change the WiFi country Code?
If we set to “US” in japan, will it violate the Radio law in Japan?

Yes, you can.Please check Switch-Science blog about the settings.
こちらを参照してください。
http://trac.switch-science.com/wiki/Raspbian-WiFi
And sorry I don't know in detail about Radio law especially you know Giteki (Techincal Conformity).but FCC seem to keep strictly managing the country code settings and so we might also keep strictly using that.

すいません、さっくりググってみたのですが、国コードに関する電波法に規定がないのですが、FCCのほうには厳格運用の規定があります。日本はこれに従う傾向にあるので、きっと厳格にやる必要はあると思います。

2. And I do not have BCM2837 data sheet. I heard peripherals is same with BCM2835
BCM2835：0x7E20xxxx
​​BCM2837：0x3F20xxxx
So I just have to change the Top digit above and apply to BCM2835 peripherals data sheet?

Thank you.

Sorry what you want to do? you want to connect some RPi 1 peripherals and etc.?

すいません、何がしたいです？なにかRaspberry Pi 1で使ってた機器を接続されたいという意図ですか？

なお、このあとの質問は差し支えなければ日本語でかまいません。あわせて日本語のカテゴリーのほうに質問のこのスレッドを移しますね。

[wayne.dolesman]

I recall from when I worked on telephony stuff, Japan has some strict regulatory issues. With that in mind I decided to google a bit.

http://www.japantimes.co.jp/life/2015/0 ... y-illegal/
"All wireless devices sold in Japan must have a technical conformity certificate (gijyutsu kijyun tekigō shōmei, which is usually shortened to giteki in Japanese). Electronic devices that have such a certificate adhere to regulations under the Radio Law."

The article also added

"Although legislation says such violations are punishable by up to a year in prison or a fine of up to ¥1 million, the regulation has never been strictly enforced."

So its up to you if you use it, afaik the device (which I believe means the entire device not just individual components) must be certified to be legal - it is more than setting the country code in wifi configs. However the odds of enforcement appear to be low.

If you set it to JP odds are no one will notice, complain, etc as it probably would otherwise comply. If you set it to anything else that allows higher power output, different frequency usage, etc then someone might notice, complain, etc and enforcement begins. This does not make it legal it just makes it appear legal to casual observers which is probably enough to prevent questions from being asked.

[drgeoff]

.

1. Is the actual radio wave output/ operating frequency changed if we change the WiFi country Code?
If we set to “US” in japan, will it violate the Radio law in Japan?

The country code should control two aspects:

a. The frequencies. Wi-Fi uses the same frequencies and channel numbers in all countries. USA permits 802.11b, g and n on Channels 1 to 11. Japan permits slightly more. Channels 1 to 13 for 802.11g and n and 1 to 14 for 802.11b.

b. The transmit power. I don't know if or how that differs between USA and Japan.

Anyway, if in Japan setting the code to that is the correct thing to do.

[masafumi_ohta]

.

1. Is the actual radio wave output/ operating frequency changed if we change the WiFi country Code?
If we set to “US” in japan, will it violate the Radio law in Japan?

The country code should control two aspects:

a. The frequencies. Wi-Fi uses the same frequencies and channel numbers in all countries. USA permits 802.11b, g and n on Channels 1 to 11. Japan permits slightly more. Channels 1 to 13 for 802.11g and n and 1 to 14 for 802.11b.

b. The transmit power. I don't know if or how that differs between USA and Japan.

Anyway, if in Japan setting the code to that is the correct thing to do.

Dreg, I forgot that thanks
Sorry I should explain him I would use Japanese.

そうですね、チャネルの違いがあるため、JPの設定に合わせないと電波法違反でした...Dregさん、ありがとうございます。