• Transfer of SODHY's activities


Since April 2, 2012, the activities of the company SODHY - a subsidiary of KATHREIN Group - are transferred to VERRIERES LE BUISSON 91 (close to Paris).

With over 20 years of experience, SODHY develops, manufactures and offers a wide range of products and systems in any frequency band from 30MHz to 20GHz.

Beside its product portfolio SODHY provides customized solutions for a large and varied number of environments: In Building coverage, road and rail tunnels, coverage extension and transportation systems.

Product Portfolio:

Circulators and Isolators

Directional Couplers


Splitters and Combiners

Loads and attenuators

We offer products within the following four main areas:

Cellular (GSM, EDGE, UMTS, CDMA 450, LTE)

Public Safety (PMR)

Broadcast (FM, DVBT)

Air band communications, Military communications


SODHY Web site



  • Alouette


Since 1986 Radio Alouette transmitter station of Mont des Alouettes in France near the city of Nantes has being in operation with a FM antenna produced by Kathrein.
After 25 years of failure-free operation Alouette decided to replace the antenna mast and to renew the antenna system as well. Last September a 4-bay circular polarized FM antenna with 5 Kw nominal power handling has been commissioned just at the moment when France celebrates its 30 years FM jubilee.

Alouette is the 1st regional radio in France collecting 500.000 listeners daily.