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Radioul Oy

Empowering customer success through cutting-edge technologies

Radioul was established by ten former Esju employees, driven by a shared commitment to extending the tradition of radio design excellence since 1991. Our choice of name, ‘Radioul,’ draws inspiration from Oulu, renowned as the birthplace of radio, where ‘Radio’ combines with ‘Oulu’ to create ‘Radioul.’

Our team boasts extensive experience, with an average of over 20 years in diverse industries. For instance, our experts have successfully provided consultancy services to more than 100 companies, addressing RF and EMC challenges across various sectors such as telecommunications, defense, medical, healthcare, mining, testing and instrumentation, renewable energy, aerospace, and industrial applications. Additionally, our team has long JDM (Joint Design and Manufacturing) radio development experience.

Radioul offers a comprehensive range of RF product development and R&D services, encompassing everything from product updates to the execution of entirely new, full-scale projects. In full-scale projects, we extend our support from the initial product specification phase to approval testing and the introduction of new products into manufacturing.

Our design services include:
- Radio unit (RU) development
- RF, electronics, Electromagnetic Compatibility (EMC) and mechanics design
- Schematic and layout design
- Simulation

Our testing capabilities whether through our in-house facilities or in partnership with trusted organizations include:
- RF performance
- Reliability
- Environmental
- Electromagnetic Compatibility (EMC)
- Over-The-Air (OTA)
- Safety

Our training services include:
- RF


  • Company name
    Radioul Oy
  • Website
  • Contact person
    Matti Kainuharju
  • Phone
    +358 40 068 9174
  • Email