Although most pages are under construction you can send me a message now via the new contact page:
Albert Zrim
The Physics Behind Radio – Chapter 2 Deutsche Version In the first chapter, we followed the idea of the electromagnetic wave from Faraday’s field lines through Maxwell’s theory to Hertz’s laboratory experiments. That story gave us the central picture: radio is not sound in the air, and it
The Physics Behind Radio – Chapter 1 Deutsche Version A radio receiver is a curious device. It does not collect sound from the air like an ear. It does not listen to pressure waves travelling through the atmosphere. Instead, it responds to invisible changes in electric and magnetic fields. Only after
From Wireless Telegraphy to Software Defined Radio Deutsche Version 1. The Missing Half of Radio History Open almost any book on the history of radio and the pattern quickly becomes apparent. The names are almost exclusively male. Hertz demonstrated electromagnetic waves. Marconi transformed wireless telegraphy into a practical communication system.
The Technical Development of Radio Receivers from the Beginning to the Present Day Deutsche Version 1. The radio receiver as a technical problem A radio receiver is not simply an audio device. Technically, it is a highly selective measurement and signal-processing system. At the antenna input, the wanted signal may