German wireless and data

Overview of chapters

German Wireless History
German Broadcast and transmitter history. Church of Sacrow. Vox-House. Transmitter sites. Visits to museums and exhibitions. Personalities of wireless. Time-line (time-sequence) of wireless. Nauen. Program lists. Radio sets of former GDR. Data lists. Volksempfangers (nazi radios). Company logos. Museums. Technical dictionaries. Restoration and repair hints. List of European radio related museums.

Miscellaneous . Radio related riddle. Build a paper model radio set. Long wave (l.f.) frequency list. Broadcast bands in Germany. Construction kits "Radiomann" and "The young Marconi" for children). Why the collecting of radio oldtimers is so interesting?

Transistors and diodes
Early transistors and semiconductors. History.

Valve & tube history
Tube collection and history. German "Wehrmachtsroehren" (military tubes). Metal tubes. Transmitter tubes. Tube testers. Company Funke. Tuning indicators. Early tubes. Loewe multifunction tubes. Communication (Post) tubes, etc.

Radio-engineering in some detail
Superheterodyne radio sets with RF-preamplifiers. Radio sets with ultra-linear final audio amplifiers. From Audiodyne to Ultradyne. Technically interesting German radio sets. Close-up of Saba Bodensee radio set. (Restoration and repair hints). RF wire broadcast. Radio sets with reverberation units. The MHG-circuit (bandwidth control unit) used in Saba radios sets. Radio sets with a OTL AF-final-tube amplifier.