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<DIV><FONT color=#000080 size=3>Hi Chris,</FONT></DIV>
<DIV><FONT color=#000080 size=3></FONT> </DIV>
<DIV><FONT color=#000080 size=3>You are quite correct about the error correction
process.</FONT></DIV>
<DIV><FONT color=#000080 size=3></FONT> </DIV>
<DIV><FONT color=#000080 size=3>The Heterodyne process was devised by Dalton H.
Prichard, the color television receiver guru at RCA Labs - what a group of
geniuses that were resident at RCA Labs.</FONT></DIV>
<DIV><FONT color=#000080 size=3></FONT><FONT color=#000080
size=3></FONT> </DIV>
<DIV><FONT color=#000080 size=3>Dalton gave me a copy of his report, that he had
authored, on the Color Tape Heterodyne Processor . He told me he had
done the heterodyne process at 20 MHz - because he just happened to have a
supply of 20 Mhz I.F. transformers in his lab.</FONT></DIV>
<DIV><FONT color=#000080 size=3></FONT> </DIV>
<DIV><FONT color=#000080 size=3> - and now the Sarnoff Corporation, with no
appreciation for the donation of the building to them, is evicting the David
Sarnoff Library! What a travesty.</FONT></DIV>
<DIV><FONT color=#000080></FONT> </DIV>
<DIV><FONT color=#000080 size=3>Ed Reitan</FONT></DIV>
<DIV><FONT color=#000080></FONT> </DIV>
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style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000080 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=Chill315@aol.com href="mailto:Chill315@aol.com">Chill315@aol.com</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=quadlist@quadvideotapegroup.com
href="mailto:quadlist@quadvideotapegroup.com">quadlist@quadvideotapegroup.com</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Tuesday, November 10, 2009 3:57
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [QuadList] RCA Hetrodyne
Process and Early Color</DIV>
<DIV><BR></DIV><FONT id=role_document face=Arial color=#000000 size=2>
<DIV>The second process has to be both unstable signals. The only way
for this to work is to use both signals that have the same errors in them to
cancel out the errors. The interesting part is that it is so
simple. </DIV>
<DIV> </DIV>
<DIV>Error plus stable equals New Error.</DIV>
<DIV>New Error minus Error now gives stable.</DIV>
<DIV> </DIV>
<DIV>It is so interesting how they came up with it. </DIV>
<DIV> </DIV>
<DIV>So what happened to the TRT?</DIV>
<DIV> </DIV>
<DIV>Chris Hill</DIV>
<DIV>WA8IGN</DIV></FONT>
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