Construction of Radio Phone and Telegraph Receivers 1922

Segnalato da Daniele Tincani  

"Construction of Radio Phone and Telegraph Receivers" è un interessante documento sull' autocostruzione di un apparato ricevente datato 1922, ricco di immagini, disegni e schemi.  

"Construction of Radio Phone and Telegraph Receivers" is an interesting document on 'self-construction of a receiving apparatus dated 1922, full of pictures, drawings and diagrams.

Pdf document of 170 pages

http://www.alwaysprepared.info/misc/VintRadio/Construction%20of%20radio%20phone%20and%20telegraph%20receivers%20for%20beginners.pdf