I am Paul Davey, Chartered Engineer and long-time member of the IET. When I started out in microwaves back in the 80's it was an esoteric field that didn't really impinge on consumer electronics apart from microwave ovens and satellite tv. Mobile comms has driven frequencies ever upwards and signal generation and detection in those ranges is now, perhaps, affordable for use in other devices. I am the co-owner of a music tech business and we have just filed a patent for a novel device for the consumer market that operates in the 13GHz – 14GHz region. I’d be pleased to hear from anyone with experience of a low-cost engineering in or around that frequency range who might be able to help us.