Cell towers in Seclin (Nord)

Declared locations include Gare Pierre Semard, Rue de Lorival, 17 Rue des Martyrs, Chemin de l'Arbre de Guise, Chem de la Duchesse and rue de Luyot.

12 systems were switched on in the past 12 months. ANFR has approved 3 new sites that are not live yet, plus additions on 4 existing masts. New: Free Mobile (4G and 5G, including 5G at 3.5 GHz) at 76 Rue Maurice Bouchery, Free Mobile (4G and 5G, including 5G at 3.5 GHz) at Chemin des Bois and Orange (4G and 5G, including 5G at 3.5 GHz) at Bas Brule. 15 Bouygues Telecom 5G transmitters are listed as technically operational — installed, but not yet declared commercially in service.

2019 was the busiest year, with 40 new systems, most of them 4G. Local 5G started with Bouygues Telecom in November 2020; Free Mobile followed in December 2020, Orange followed in December 2021. The oldest transmitter still listed here goes back to 1994.

The tallest structure is a 37 m building at 17 Rue des Martyrs. The median height of measured supports is 30 m.

3.5 GHz 5G is declared by Bouygues Telecom on 7 of its 8 masts, SFR on 5 of its 6 masts, Orange on 4 of its 5 masts and Free Mobile on 3 of its 4 masts.

Gondecourt lies 3.1 km to the west and has only 5 masts.

Supports leave a gap of about 1.7 km to the south-east of the centre.

Of the 16 masts in the commune, Bouygues Telecom is the only carrier on 4 masts.

By mast count, Seclin is 17th of the 94 Nord towns that have five or more. With 16 masts for 13,261 residents, or 12 per 10,000, it has more masts per inhabitant than the median for those towns (9).

Most of the town's 16 masts are pylons (9).

Source: operator declarations to ANFR, as of October 2026. Projects that are only approved are left out of the totals.