Since I did not meet Eric Zepler until he was 59 years old, in writing about his earlier life and work I have relied on information from publications and from his family. Most of that information has come from the following people.

Firstly I must express most sincerely my gratitude to Carole Zepler and Matthew Zepler for all of the help that they have given to me, when I was writing about their father for the Oxford Dictionary of National Biography, and now that I have written in more detail in these webpages. This time there is room not only for more words, but also for photographs of their father in his younger days that have not been published before.

Secondly I must acknowledge the use that I have made of the biography of Eric Zepler written by Professor Berthold Bosch of Ruhr University at Bochum, entitled ‘Dr Erich Zepler: ein wechselvolles Leben fur die Funktechnik’ (an eventful life in radio engineering), that was published in Funkgeschichte no. 72 (1990) pp 9-15. Carole and Matthew have translated that publication from German to English. Also I have used information from other publications and from websites.

In 1956 Berthold Bosch came from Germany to our Department of Electronics to undertake research for a PhD degree, supervised by Eric Zepler. His thesis on ‘Noise in Microwave Oscillators’ was submitted successfully in 1960, when I was working in the department as a lecturer.

In 1980, after the death of Eric Zepler, Berthold Bosch arranged for the transfer to the Department of Electronics, from Bochum, of a Telefunken T9W radio receiver, on permanent loan from AEG/Telefunken. That historic receiver, which was designed in 1927-8 by Eric Zepler and Ernst Klotz, is described in some of these webpages. I have used information about it that was provided by David Dawkins, when he maintained it in working order in the School of Electronics and Computer Science.