Bulgaria’s Sofia Metro to offer full 3G, 4G coverage
The three sections added to the network are: Mladost 1 – Sofia Airport, Mladost 1 – Business Park Sofia, and James Bourchier – Vitosha, BNR said, citing one of the mobile operators.
Bulgaria’s three mobile operators all use the telecommunication system embedded in Sofia Metro.
Stations use antenna transmission while a radiating cable is used in the sections between them. ■