Karl Rothammel

Karl Rothammel (1914 – 1987) was an amateur radio enthusiast, author and educator. He published articles in the journal ''Radioamatér'' for five years, and authored several books [http://www.worldcat.org/search?q=Rothammel&qt=faceted&fq=ap%3AKarl+Rothammel] including ''Very High Frequencies'' and ''Practice of the Television Aerials''. Rothammel was born in 1914 in Fürth, Bavaria; he died at the age of 73 in Sonneberg, Thuringia (then part of East Germany). Y21BK was his last amateur call sign. Provided by Wikipedia