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Written by: Grzegorz Makarewicz
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A website dedicated to various topics that interest me. Retro electronics – primarily devices using vacuum tubes, forgotten old corners of Warsaw, playing with artificial intelligence, and other topics that strike my fancy at the moment.

I'm also trying to recreate the device descriptions I once posted on the now-defunct FonAr and Trioda website. These descriptions are not only mine but also those of my friends, primarily from the Trioda Forum. To enhance the site's content, I've included illustrations in various sections that I found in old books, usually from the 1950s, on topics broadly related to radio engineering (these are books or excerpts from books from defunct publishers, often without identifying the authors).

Where possible, I add information about the author to the drawing.

As promised, on July 23, 2026, I added another diagrams to the book (there are already 234 of them)
On that optimistic note, I'm concluding today's release of the schematics in the aforementioned volume of the catalog. It's hard to believe, but I managed to add all the schematics included in it. However, the catalog has eleven volumes and two editions, so there's still a lot of work left. Soon, I'll begin sharing the contents of the next, randomly selected volume.
11/08/2026 - I added diagrams to the next one, this time the first volume catalog.

 

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