Cell towers in Roybon (Isère)

Masts stand at Route du Col de la Madeleine (dionay), Mas de la Verne, L Aigue Noire Haut, Le Vatilier, RTE du Vatillier and Mas de l'Allemagne.

The declared supports are a 30 m pylon, at Route du Col de la Madeleine (dionay), for Bouygues Telecom, Free Mobile, Orange and SFR; a 36 m pylon, at Mas de la Verne, for Bouygues Telecom, Free Mobile, Orange and SFR; a 36 m pylon, at L Aigue Noire Haut, for Bouygues Telecom, Free Mobile, Orange and SFR; a 16 m pylon, at Le Vatilier, for Bouygues Telecom, Free Mobile and SFR; a 22 m pylon, at RTE du Vatillier, for Orange; a 25 m pylon, at Mas de l'Allemagne, for Bouygues Telecom, Free Mobile and SFR.

No 3.5 GHz from Free Mobile here, only 700 MHz. 5G is on 33% of masts here, against 92% across Isère towns with five or more masts.

Every mast here is owned by a tower company rather than by a carrier. Mix: TDF (4), Totem (1) and ATC France (1).

Systems from 2003 are still on the register. Local 5G started with Free Mobile in March 2021. 2018 was the busiest year, with 13 new systems, most of them 4G.

Approved additions not yet in service are pending on 4 existing masts, for example Bouygues Telecom (4G and 5G) at Mas de l'Allemagne, Free Mobile (4G 800 MHz) at Route du Col de la Madeleine (dionay) and Free Mobile (4G 800 MHz) at Mas de la Verne. 2 Free Mobile 5G transmitters are listed as technically operational — installed, but not yet declared commercially in service.

The tallest structure is a 36 m pylon at Mas de la Verne. The median height of measured supports is 27 m.

3 masts carry all four networks.

Among the 43 Isère towns with at least five masts, Roybon ranks 29th by mast count.

The widest declared gap between neighbouring supports is about 3.2 km, to the south-west of the centre.

13 km to the south-east, neighbouring Saint-Marcellin has a higher 5G share (100%).

Figures above cover installations declared to ANFR as in service or technically operational, as of October 2026; approved projects are not counted.