Cell towers in Saint-Bonnet-en-Champsaur

Antennas are listed at La Blache, Villard Trottier, Charbillac and 177 rue de la Centenaire.

The declared supports are a 13 m pylon, at La Blache, for Bouygues Telecom, Free Mobile, Orange and SFR; a 25 m pylon, at Villard Trottier, for Free Mobile and Orange; a 30 m pylon, at Charbillac, for Bouygues Telecom, Free Mobile, Orange and SFR; a 25 m pylon, at 177 rue de la Centenaire, for Bouygues Telecom and SFR; a 15 m building, for Bouygues Telecom and SFR.

The highest support stands 30 m at Charbillac (pylon). The median is 25 m, above the Hautes-Alpes median of 19 m.

Systems from 1998 are still on the register. Local 5G started with Bouygues Telecom in January 2022; SFR followed in November 2022, Free Mobile followed in May 2025. 2016 was the busiest year, with 21 new systems, most of them 3G.

Over the past 12 months ANFR recorded 17 new systems here. Approved additions not yet in service are pending on 3 existing masts, for example Bouygues Telecom (4G 2100 MHz) at 177 rue de la Centenaire, Free Mobile (4G 800 MHz) at La Blache and Free Mobile (4G 800 MHz) at Charbillac. 4 Bouygues Telecom 5G transmitters are listed as technically operational — installed, but not yet declared commercially in service.

On 3.5 GHz, the fastest 5G band: Bouygues Telecom on 2 of its 4 masts, SFR on 2 of its 4 masts, Free Mobile on 1 of its 3 masts and Orange on 1 of its 3 masts. 5G is on 60% of masts here, against 81% across Hautes-Alpes towns with five or more masts.

2 masts carry all four networks.

Among the 6 Hautes-Alpes towns with at least five masts, Saint-Bonnet-en-Champsaur ranks 6th by mast count. With 5 masts for 2,086 residents, or 24 per 10,000, it has fewer masts per inhabitant than the median for those towns (32).

The widest declared gap between neighbouring supports is about 2.7 km, to the north of the centre.

Seyne-les-Alpes lies 43 km to the south-east and has a higher 5G share (80%).

4 pylons and 1 building carry the commune's antennas.

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