Instructor profile Thereza Macnamara

Mr. Geoff Varrall

Director of RTT Programmes, UK.

Mr. Geoff Varrall joined RTT in 1985 as an executive director and shareholder to develop RTT's international business as a provider of technology and business services to the wireless industry. He co-developed RTT's original series of design and facilitation workshops including 'RF Technology', 'Data over Radio', 'Introduction to Mobile Radio', and 'Private Mobile Radio Systems and developed 'The Oxford Programme', a five day strategic technology and market programme presented annually between 1991 and 2005.

Geoff has been running in-depth technology and market workshops for the industry for over 34 years, spanning five generations of mobile cellular and Wi-Fi technology. As well as authoring six books, his consultancy work has included clients from all parts of the global telecoms supply chain including most recently automotive connectivity and Bluetooth for automotive IOT. In his spare time he plays Jazz trumpet, Flugelhorn and cornet semi-professionally and is a keen marathon runner and ultra-runner.

Mr. Varrall has been a member of the Continuing Education Institute-Europe Faculty since 2021.


Mobile Radio Servicing Handbook (Heinemann Newnes, UK, 1989)
Data Over Radio , (Quantum Publishing, Mendocino, USA,1992)
3G Handset and Network Design (John Wiley, New York, 2003)
Making Telecoms Work – from technical innovation to commercial success (John Wiley, 2012)
5G Spectrum and Standards (Artech House, 2016)
5G and Satellite Spectrum, Standards and Scale (Artech House, 2018)
5G and Satellite RF and Optical Integration (Artech House 2023)

Recent project work includes working with regulatory authorities in the Middle East on the regulatory and competition policy challenges of high count NGSO constellations and with a sovereign space defence agency on NGSO sovereign security considerations.

Course 820 LEO, MEO and GSO System and Service Integration