Topband: Presentation on the Development of Transoceanic Radio Communications from 1860

[k8bhz at alphacomm.net]

Thanks for sharing Frank. Nice presentation! It ties together many of 
the articles from the AWA publications. I've made the trip to Cutler, 
Maine and am in awe.

Brian  K8BHZ

On 12/12/2019 3:24 PM, donovanf at starpower.net wrote:
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> I gave a presentation on the history of transoceanic radio communications
> to the Frankford Radio Club a few days ago.
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> www.youtube.com/watch?v=pLN0MMxCvlc
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> 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 satellite
> communications capabilities from before 1960 through the 1970s.
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> My presentation closes with a brief description of recent Armed Forces Day
> operations on the site of the original NSS station.
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> Enjoy!
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> 73
> Frank
> W3LPL
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> _________________
> Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
>