[ARC5] Development of radio during WWI

[jmfranke]

There was air to ground radio developed for directing artillery; BC-14 
ground crystal set and airborne spark transmitter.  Armstrong developed 
superhet while in France, etc.

John  WA4WDL

--------------------------------------------------
From: "Bob Macklin" <macklinbob at msn.com>
Sent: Sunday, September 19, 2010 11:01 AM
To: "Discussion of AN/ARC-5 military radio equipment." 
<arc5 at mailman.qth.net>
Subject: Re: [ARC5] Development of radio during WWI

> During WWI there was a mode of telegraphy were ground current was used. 
> The
> stations used rods driven into the ground as their antennas. Not actually
> radio but it did work. I have seen the patents on this mode that date back
> to about 1898.
>
> Bob Macklin
> K5MYJ
> Seattle, Wa.
> "Real Radios Glow In The Dark"
> ----- Original Message ----- 
> From: "Ian Wilson" <ianmwilson73 at gmail.com>
> To: "Discussion of AN/ARC-5 military radio equipment."
> <arc5 at mailman.qth.net>
> Sent: Sunday, September 19, 2010 7:52 AM
> Subject: [ARC5] Development of radio during WWI
>
>
>>I know this is somewhat off topic but it seemed like a good list to ask.
>> I am preparing a short speech on some radio-related topic. It occurred to
>> me that the changes in use and equipment during WW I must have been
>> tremendous, and this would make a good speech topic.
>>
>> I thought there might have been some history in the early (1936) Radio
>> Handbook
>> that I have, but there is no mention of the period. I guess it was 
>> distant
>> past - in
>> radio terms - by then.
>>
>> Any (on-line) references to this topic that the list members could
>> recommend?
>>
>> 73, ian K3IMW
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