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.


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


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


My experience as a Radio Frequency engineer means I can help you with any RF designs you are having problems with.

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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Find out how I can help your business. Get in touch.

Whether there’s a particular RF, Microwave or electronic engineering issue you’re having trouble with, or if you’d just like to talk through your situation to see if I can help, I’d love to hear from you.

We’re based at Sackville Place, 44-48 Magdalen Street
Norwich, NR3 1JU.

Send me an email using the form on the right (or below if you’re using a mobile device) and I’ll be in touch.

Alternatively, if you’d like a chat to see if I might be able to help, you can call me on 01603 339 122. 


Sackville Place, 44-48 Magdalen Street, Norwich, NR3 1JU