41
/
AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
May 31, 2026
1928103
159209
2
Public Timelines
FAQ

dec 29, 1839 - The telegraph—the precursor of radio technology—was invented in the 1840s.

Added to timeline:

18 Oct 2018
0
0
530

Date:

dec 29, 1839
Now
~ 186 years ago