[CQ-Contest] Presentation on the Development of Transoceanic Radio Communications from 1860

[donovanf at starpower.net]

Hi George, 


There are numerous excellent books already, just Google: History of Wireless 


73 
Frank 
W3LPL 

----- Original Message -----

From: "George Harlem" <george.harlem at gmail.com> 
To: donovanf at starpower.net 
Cc: "cq-contest" <cq-contest at contesting.com> 
Sent: Friday, December 13, 2019 1:28:29 PM 
Subject: Re: [CQ-Contest] Presentation on the Development of Transoceanic Radio Communications from 1860 

Hi Frank, I’m anxious to check out your presentation. How about adding even more details and writing the actual book? I love the historical background of the development of radio and HF communication in the “early days” and the key players. Then Ken Burns can make it into a PBS special! 


George W1EBI 



>From George's iPhone 



On Dec 12, 2019, at 4:01 PM, donovanf at starpower.net wrote: 




<blockquote>




I gave a presentation on the history of transoceanic radio communications 
to the Frankford Radio Club a few days ago. 



www.youtube.com/watch?v=pLN0MMxCvlc 


My presentation covers radio technology development from the Maxwell's 
mathematical description of electromagnetic waves in 1860-1865, Hertz's 
development of a crude spark transmitter and spark receiver that proved 
the existence electromagnetic waves in 1886-1888, Fessenden's hetrodyne 
receiver patent in 1901, Marconi's development of two way transoceanic 
high power radio spark communications from 1901 through 1907, the 
development of multi-hundred-kilowatt spark, arc and electron tube 
transmitters from 1906 through the 1930s, Armstrong's development of 
regenerative and superhetrodyne receivers from 1913-1918, ARRL's very 
successful one way transatlantic test in 1921 at about 1 MHz, the development 
of military and commercial HF receiver, transmitter and antenna technology 
from 1921 through the 1970s, and the development of early operational 
military satellite communications capabilities from before 1960 through 
the 1970s. 


My presentation closes with a brief description of recent Armed Forces Day 
operations on the site of the original NSS station. 


Enjoy! 


73 
Frank 
W3LPL 


















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</blockquote>