Cell towers in Chennevieres-sur-Marne

Declared supports include 1 camouflaged "tree" pylon, with buildings making up most of the remainder.

Antennas are listed at Carrefour, 1 à 9 Square Auguste Comte, 11 Bis Rue du Belvédère, 3 Bis Rue Gay Lussac, 1 B avenue Joseph Cugnot and 28 rue Aristide Briand.

Systems from 2013 are still on the register. Bouygues Telecom opened 5G here in November 2020; Free Mobile followed in December 2020, SFR followed in June 2021. 2021 was the busiest year, with 24 new systems, most of them 5G.

Over the past 12 months ANFR recorded 12 new systems here. 15 Bouygues Telecom 5G transmitters are listed as technically operational — installed, but not yet declared commercially in service.

The tallest structure is a 132 m radio relay tower at Fort de Champigigny. The median is 22 m, slightly below the Val-de-Marne median of 25 m.

Only one mast carries all four networks; 5 supports carry only Bouygues Telecom.

On 3.5 GHz, the fastest 5G band: Bouygues Telecom on 7 of its 8 masts, Free Mobile on 5 of its 6 masts, Orange on 4 of its 5 masts and SFR on 1 of its 2 masts.

1.2 km to the south, neighbouring Ormesson-sur-Marne has only 5 masts.

Most declared azimuths point outward, along a corridor or valley rather than at the centre.

Of the 147 systems declared here, 36 are installed but not yet in commercial service (ANFR, as of October 2026).