<html>
<head>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
</head>
<body bgcolor="#FFFFFF" text="#000000">
I don't know if the code talkers were involved in any covert
operations but I believe that they primarily provided their form of
encryption for military units. But, you are correct that it was
voice "encryption" although for them it was "plain language"... that
could be used on the ham bands!<br>
<br>
Paul -- N4PD<br>
<br>
<div class="moz-cite-prefix">On 6/17/2015 11:24 PM, Mike ODELL
wrote:<br>
</div>
<blockquote cite="mid:A2D9399A-3518-4562-AA03-7F1E40BE97BB@ccr.org"
type="cite">
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<div>one slight correction. </div>
<div><br>
</div>
<div>the Navajo Code Talkers provided encrypted voice services.</div>
<div>two levels, actually. the English text was word substituted
and then</div>
<div>translated on the fly to and from Navajo. The Japanese never </div>
<div>figured out what the language was, much less break anything.</div>
<div><br>
<br>
Sent from my iPad so please excuse the jammy fingers.</div>
<div><br>
On Jun 16, 2015, at 9:41 AM, Paul Dluehosh <<a
moz-do-not-send="true" href="mailto:n4pd@ieee.org">n4pd@ieee.org</a>>
wrote:<br>
<br>
</div>
<blockquote type="cite">
<div>
<meta http-equiv="content-type" content="text/html;
charset=utf-8">
<div>Bob,</div>
<div><br>
</div>
<div>The Secret Wireless War is a great book and it gives some
real insight into a segment of the effort to defeat the
Axis.</div>
<div><br>
</div>
<div>It would make sense that only CW was primarily used since
text could be encrypted easily (manually) before
transmission, whereas voice encryption was probably not
available in an easily transportable package for covert
operatives.</div>
<div><br>
</div>
<div>Since many nations may have observed enforced radio
silence on the ham bands, like the U.S. did, probably most
of the traffic on the air was covert transmissions. The only
voice transmissions over any distance that I am aware of
were cryptic messages from BBC broadcasting at specified
times to agents overseas.</div>
<div><br>
</div>
<div>You just need to look at some of the surplus equipment
that became available to hams after WWII to see the state of
the art in receivers at the time, which I don't think was
all that bad. Maybe not as sensitive or selective, but it
did the job during the war and for hams after the war!</div>
<div><br>
</div>
<div>My $0.02.</div>
<div><br>
73,<br>
Paul -- N4PD
<div>Sent from my iPad</div>
<div><br>
</div>
</div>
<div><br>
On Jun 16, 2015, at 08:42, Robert Bruninga <<a
moz-do-not-send="true" href="mailto:bruninga@usna.edu">bruninga@usna.edu</a>>
wrote:<br>
<br>
</div>
<blockquote type="cite">
<div>
<meta http-equiv="Content-Type" content="text/html;
charset=utf-8">
<meta name="Generator" content="Microsoft Word 14
(filtered medium)">
<style><!--
/* Font Definitions */
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri","sans-serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
span.EmailStyle17
{mso-style-type:personal-compose;
font-family:"Calibri","sans-serif";
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;
font-family:"Calibri","sans-serif";}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style>
<div class="WordSection1">
<p class="MsoNormal">What did the radio bands sound like
in 1940?</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">I’m reading the secret wireless war
by Geoffrey Pidgeon and that, along with reads about
Bletchley Park and another book on spies (cant
remember the name) and I just have no clue what one
heard when “tuning the bands”.</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">I had generally just assumed that
everything was CW by the look of things.. And RTTY….
And so far in the book, there is no mention of voice
radio other than a limited use short tange FM system
for spies to talk up to aircraft..</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">My Father in law was a radioman in
the battle of the bulge but I didn’t get around to
asking till it was too late.</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">I guess there is no way to
re-create it, so unless there are recordings, I guess
it is gone.</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">Apparently SSB was discovered in
1915 and patented in 1923 or so? It was used by high
commands in WWII to mask normal voice, but I haven’t
found much about its juse in WWII.</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">I guess by WWII, everything had a
BFO or the superregens too the CW came out as tones
just like today?</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">Bob, WB4APR</p>
</div>
</div>
</blockquote>
<blockquote type="cite">
<div><span>_______________________________________________</span><br>
<span>Tacos mailing list</span><br>
<span><a moz-do-not-send="true"
href="mailto:Tacos@amrad.org">Tacos@amrad.org</a></span><br>
<span><a moz-do-not-send="true"
href="https://lists.amrad.org/mailman/listinfo/tacos">https://lists.amrad.org/mailman/listinfo/tacos</a></span><br>
</div>
</blockquote>
</div>
</blockquote>
<blockquote type="cite">
<div><span>_______________________________________________</span><br>
<span>Tacos mailing list</span><br>
<span><a moz-do-not-send="true" href="mailto:Tacos@amrad.org">Tacos@amrad.org</a></span><br>
<span><a moz-do-not-send="true"
href="https://lists.amrad.org/mailman/listinfo/tacos">https://lists.amrad.org/mailman/listinfo/tacos</a></span><br>
</div>
</blockquote>
</blockquote>
<br>
</body>
</html>