'Alfred vail' presentation slideshows

Phone Systems

Phone Systems Overview of Communication Matthew Whited Brief History 1840: Samuel F.B. Morse & Alfred Vail were granted patent for first practical telegraph 1876: Alexander Graham Bell was granted patent for telephone 1877: Bell offered to sell telephone to Western Union for $100,000

806 views • 40 slides

Phone Systems

Phone Systems. Overview of Communication Matthew Whited. Brief History. 1840: Samuel F.B. Morse & Alfred Vail were granted patent for first practical telegraph 1876: Alexander Graham Bell was granted patent for telephone 1877: Bell offered to sell telephone to Western Union for $100,000

570 views • 40 slides

CW Mode (A1A)

414 views • 18 slides

Early Electronic Communication:

225 views • 16 slides