Cell towers in Chateaulin (Finistère)

Place names on the register include Stang Ar Garront, Kergonquis Huella, ZAC de Run Ar Puns, Quivouidic and Proche Rue du Vastil.

Inventory: a 45 m pylon, at Stang Ar Garront, for Free Mobile and Orange; a 32 m pylon, at Kergonquis Huella, for Free Mobile; a 48 m pylon, at ZAC de Run Ar Puns, for Bouygues Telecom and SFR; a 16 m building, for Orange; a 33 m pylon, at Quivouidic, for Free Mobile; a 39 m pylon, at Proche Rue du Vastil, for Free Mobile.

The tallest structure is a 48 m pylon at ZAC de Run Ar Puns. The median is 36 m, above the Finistère median of 32 m.

2015 was the busiest year, with 12 new systems, most of them 4G. Free Mobile opened 5G here in December 2020; SFR followed in September 2022, Bouygues Telecom followed in September 2022. The oldest transmitter still listed here goes back to 2011.

Approved additions not yet in service are pending on one existing mast, for example Free Mobile (5G 700 MHz) at Proche Rue du Vastil. 2 Bouygues Telecom 5G transmitters are listed as technically operational — installed, but not yet declared commercially in service.

Of the 6 masts in the commune, Free Mobile is the only carrier on 3 masts.

Supports leave a gap of about 2.8 km to the east of the centre. Most declared azimuths point outward, along a corridor or valley rather than at the centre.

3.5 GHz 5G is declared by Free Mobile on 2 of its 4 masts, Bouygues Telecom on its only mast, Orange on 1 of its 2 masts and SFR on its only mast.

22 km to the south, neighbouring Quimper has 43 masts, more than here.

Most of the town's 6 masts are pylons (5).

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