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<font size="+1"><font face="Comic Sans MS">Good catch. I'll have to
add this to my reading list<br>
<br>
Richard O'Neill wrote on 10/22/2017 2:03 PM:
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<a class="moz-txt-link-freetext"
href="https://groups.yahoo.com/neo/groups/SparkGapCollectors/conversations/messages/349">https://groups.yahoo.com/neo/groups/SparkGapCollectors/conversations/messages/349</a><br>
<br>
<br>
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sans-serif; font-size: 16px; font-style: normal;
font-variant: normal; text-decoration: none;"> <a
style="text-decoration:none;"
href="https://groups.yahoo.com/neo/groups/SparkGapCollectors/conversations/topics/349;_ylc=X3oDMTJxNGNmdmtsBF9TAzk3MzU5NzE1BGdycElkAzg3MDIyNDQxBGdycHNwSWQDMTcwNTU3Nzg5OQRtc2dJZAMzNDkEc2VjA2Rtc2cEc2xrA3Ztc2cEc3RpbWUDMTUwODY0MDIzMA--"
name="1a"> <span style="color: #3353f3;"> Text-book on
Wireless Telegraphy </span> </a> </h2>
<div style="clear:both;"> </div>
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pading: 0px;"> Sat Oct 21, 2017 10:34 am (PDT) . Posted
by: </h4>
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font-style: normal; font-variant: normal; font-weight:
normal; text-decoration: none; margin: 0px 0px 0px 1px;
padding: 0px "> <a style="text-decoration:none;"
href="mailto:LDighera@att.net?subject=Re%3A%20Text-book%20on%20Wireless%20Telegraphy">
<span style="color: #3353f3;"> "Larry Dighera" ldighera
</span> </a> </h3>
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<br>
I've just read "Text-book on Wireless Telegraphy" available to
download here: <a class="moz-txt-link-freetext"
href="https://books.google.com/books?id=2a86AQAAMAAJ">https://books.google.com/books?id=2a86AQAAMAAJ</a>
<br>
<br>
This book was used by the Navy to train radio operators in
1914 and thoroughly documents the state of the art in
electromagnetic physics and Marconi spark equipment.<br>
I found it fascinating to journey back to the dawn of radio
and see the rudimentary science known at that time. The
Marconi equipment is thoroughly described including design
theory, schematic circuit diagrams and proper operation and
connection. I also located Navy documents that provides a
detailed history of Navy wireless operations from its
inception.<br>
<br>
<a class="moz-txt-link-freetext"
href="http://www.virhistory.com/navy/commsta/todd-sfo-01.pdf">http://www.virhistory.com/navy/commsta/todd-sfo-01.pdf</a><br>
<br>
<a class="moz-txt-link-freetext"
href="http://www.virhistory.com/navy/commsta/mare-island.htm">http://www.virhistory.com/navy/commsta/mare-island.htm</a>
and<br>
<br>
<a class="moz-txt-link-freetext"
href="http://www.virhistory.com/navy/commsta/todd-sandiego-01.pdf">http://www.virhistory.com/navy/commsta/todd-sandiego-01.pdf</a>
. <br>
<br>
This little voyage into the past gave me a considerably better
understanding of just what can be done with a 5KW spark
station and crystal receiver. <br>
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