Welcome to Cambridge Radio Technologies.

RF and Microwave engineering design expertise for start-ups and small businesses.
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Bringing more than 40 years of  RF design experience to your business.

CRT helps high tech start-ups and SMEs with their RF and Microwave design needs – without the worry of employing a permanent member of staff.


Helping choose the best topologies and components for your own designs, and recruiting, interviewing and building your own RF team.


Assisting your business by carrying out web research and Patent research in RF technologies and techniques on your behalf.


Decades of RF experience ensures expert assistance with any design issues

I'm passionate about radio technology.

My name is Keith Alexander and I have been an electronic design engineer for more than 40 years.

I built my first crystal radio from a kit when I was seven and  my first short wave radio at eleven.

More than fifty years later I love helping high tech small businesses and start-ups who need the expertise I can offer but don’t want to employ a full-time member of staff.

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