 |
Receiver Baudot circa 1880. Printing telegraph using a 5-element code and allowing mechanical time division multiplexing. |
 |
Hughes printing telegraph circa 1890. |
 |
Marconi magnetic detector or "Maggie" patented in 1902. |
 |
Marconi multiple tuner patent 1907. |
 |
Single needle telegraph circa 1870 as used by English railways. |
 |
Reliefwriter (embosser) made and used in Austria. |
 |
Siemens & Halske made for Russia. |
 |
Very early Siemens & Halske circa 1850. |