Cell towers in Dieppe (Seine-Maritime)

Declared supports include 2 water towers, with buildings making up most of the remainder.

Antennas are listed at rue des Martyrs de la Résistance, 8 Rue Guy de Maupassant, Rue Alexandre Anquetin-Immeuble Auvergne, Rue du Saint-Laurent, Stade Jean Merault and rue Jacques Monod.

Systems from 1999 are still on the register. Local 5G started with Free Mobile in December 2020; Orange followed in January 2022, SFR followed in February 2023. 2016 was the busiest year, with 29 new systems, most of them 4G.

Approved additions not yet in service are pending on 2 existing masts, for example Free Mobile (5G 3.5 GHz) and Orange (4G and 5G, including 5G at 3.5 GHz) at Stade Jean Merault. 10 Bouygues Telecom 5G transmitters are listed as technically operational — installed, but not yet declared commercially in service.

ANFR lists a 54 m water tower at rue Jacques Monod as the tallest structure. The median is 32 m, above the Seine-Maritime median of 27 m.

On 3.5 GHz, the fastest 5G band: Bouygues Telecom on 5 of its 6 masts, SFR on 5 of its 6 masts, Free Mobile on 4 of its 6 masts and Orange on 4 of its 6 masts.

20 km to the north-east, neighbouring Criel-sur-Mer has only 6 masts.

Only one mast carries all four networks.

Among the 30 Seine-Maritime towns with at least five masts, Dieppe ranks 8th by mast count. With 14 masts for 28,496 residents, or 5 per 10,000, it has fewer masts per inhabitant than the median for those towns (8).

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