3 ms·
I'm not sure if it's the same thing in Japan, but how they get signal in the metro in Amsterdam is interesting. Effectively it's coax cable running along the tu
by eythian 6y ago
I'm not sure if it's the same thing in Japan, but how they get signal in the metro in Amsterdam is interesting. Effectively it's coax cable running along the tunnel with holes in the shielding to let the signal leak out.
Article (in Dutch): https://tweakers.net/nieuws/141195/mobiel-netwerk-met-leaky-cables-in-amsterdamse-noord-zuidlijn-gaat-live.html https://tweakers.net/nieuws/141195/mobiel-netwerk-met-leaky-...
- ChrisMarshallNY 6y agoMight be. I don't know. I'm told that the Japanese system is a form of GSM that is fairly weak, so there is a need for very many repeaters.
- fomine3 6y agoLooks like same. It uses Leaky Coaxial Cable. (japanese) https://k-tai.watch.impress.co.jp/docs/news/592635.html https://k-tai.watch.impress.co.jp/docs/news/592635.html (photo for just cable) https://k-tai.watch.impress.co.jp/img/ktw/docs/592/635/html/me13.jpg.html https://k-tai.watch.impress.co.jp/img/ktw/docs/592/635/html/...