Richard and Mary
The whole www site is being moved. Hopefully you will not notice any change, but it will be very helpful if you report any broken links or other things that do not work. Thank you.
From October 1964 to April 1975 I was working for Sinclair Radionics: this was the time that Clive Sinclair was into Hi-Fi. Initially I was assisting with the design of such products as the Z12, Stereo 25, System 200, System 3000 amplifiers and then for much of this time I was either doing the servicing or was in charge of the service department.
There is a lot of fiction on the www about the reliability of various Sinclair products. I am in an unchallenged position to know the truth of this, what the problems were and why the products sometimes proved too unreliable, and what the cures were. I can add to this area of my www site as questions are asked. so please contact me as necessary.
When I left Sinclair Radionics, I was working with Bi-Pre-Pak designing audio equipment for them, then I was with PA:CE / MM Electronics on their stage mixing equipment. Then I left them to join Welding Alloys Ltd, designing their welding machines. Finally I started out on my own trading as 4QD, making motor speed controllers.
So if you have queries about the old products of any of these businesses - I may be able to help. Use the contact button!