Cell towers in Riantec (Morbihan)

Place names on the register include Clos Er Avelen, Bellevue du Loch, L'Audrière, 30 rue de la Croizetière and ZA de Villemarion.

Inventory: a 27 m pylon, at Clos Er Avelen, for Bouygues Telecom and SFR; a 24 m pylon, at Bellevue du Loch, for Orange; a 26 m pylon, at L'Audrière, for Orange; a 49 m pylon, at 30 rue de la Croizetière, for Bouygues Telecom, Free Mobile and SFR; a 38 m pylon, at ZA de Villemarion, for Free Mobile.

ANFR lists a 49 m pylon at 30 rue de la Croizetière as the tallest structure. The median is 27 m, slightly below the Morbihan median of 35 m.

No mast is operator-owned: Totem has 2, Hivory has 1 and On Tower France has 1.

2021 was the busiest year, with 11 new systems, most of them 4G. Free Mobile switched on the first 5G here in March 2021; Orange followed in December 2021, SFR followed in June 2022. The oldest transmitter still listed here goes back to 1998.

20 systems were switched on in the past 12 months. Approved additions not yet in service are pending on one existing mast, for example Bouygues Telecom (3G 900 MHz) at Clos Er Avelen and SFR (2G, 3G and 4G) at Clos Er Avelen. 4 Bouygues Telecom 5G transmitters are listed as technically operational — installed, but not yet declared commercially in service.

By mast count, Riantec is 34th of the 35 Morbihan towns that have five or more. With 5 masts for 5,865 residents, or 9 per 10,000, it has fewer masts per inhabitant than the median for those towns (10).

3.5 GHz 5G is declared by Bouygues Telecom on all 2 masts, SFR on all 2 masts, Free Mobile on 1 of its 2 masts and Orange on 1 of its 2 masts. 100% of the town's masts carry 5G, more than across Morbihan towns with five or more masts (87%).

6.1 km to the north, neighbouring Lanester has 12 masts, more than here.

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