contributions to this field.

He retired in 1973 and died of brain tumor in 1982.

Achievements

Guanella had a strong interest in electronics, especially high-frequency (HF) techniques. While he did consulting work for various companies such as Philips, AEG and BBC, he came up with inventions resulting in 40 patent application before entering employment at BBC. Some of these early inventions related to locating and radio direction-finding

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