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<DIV>A little summary on one of our heroes...</DIV>
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<DIV>1946-1947</DIV>
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<DIV>K.D. Smith was project engineer on the TE-1 and TE-2 short haul microwave
relay system intended for Television studio to transmitter site service; and for
repeatered routes of 2 to 3 links. The TE-1 system operated between 3.7 and 4.2
Gigahertz.</DIV>
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<DIV>An excellent explanation of this system can be found in a publication
entitled "A New Microwave Television System" that K.D. Smith co-authored with
J.F. Wentz. This talk was presented at the winter meeting of the AIEE in January
1947, and the paper was printed in the Transactions for the AIEE Volume 66,
pages 465-470 in 1947.</DIV>
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<DIV>For an in depth look at what it was like to set up the first test between
Hollywood and Mount Wilson, we have on file K.D. Smith’s Field notes of this
event. It chronicles the events from unboxing the equipment through the
successes and problems that were encountered! <FONT color=#ff0000>(editor
note... hand written and incredible!)</FONT></DIV>
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<DIV>1948-1951</DIV>
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<DIV>K.D. Smith was the circuit design supervisor on the TD-2 Microwave Radio
Relay System. The TD-2 was the backbone trans-continental microwave relay system
carrying network television programming as well as long distance telephone
traffic. Long before communications satellites were a practical reality, the
TD-2 system was what brought us the television shows we so much enjoyed from the
network studios in New York, and gave us enough long distance telephone
connections to talk to Aunt Martha back on the Eastern seaboard during Christmas
day!<BR> <BR>K.D. Smith’s specific responsibility was the F.M. terminal
systems used in the TD-2. The F.M. terminal converted video signals to a 70 MHz
frequency modulated signal that modulated the microwave transmitter circuit that
generated the output signal of the microwave relay link.</DIV>
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<DIV>Excellent reference on the TD-2 system can be found in "The TD-2 Microwave
Radio Relay System" by A.A. Roetken, K.D. Smith and R.W. Friis. This article was
published in the BELL SYSTEM TECHNICAL JOURNAL, Volume 30 (part 2) Pages
1041-1077 on October 1951.</DIV>
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<DIV>An interesting side light is that this publication was one of the three
selected from the BELL SYSTEM TECHNICAL JOURNAL to be preserved until the year
6939 AD, in the Westinghouse TIME CAPSULE II. This time capsule contains a
panorama of what was then current human activities. The capsule was buried
alongside TIME CAPSULE I. Both capsules reside under ground at the site of
the two New York world’s fair. TIME CAPSULE I was buried in 1938 and the second
was buried in 1965. This historic time capsule is discussed in BELL LABS
NEWS, May 15 1965. This newsletter as well as the publication on TD-2 that
K.D. Smith co-authored is on file at the museum.</DIV>
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<DIV>Another excellent reference on the TD-2 system is contained in THE
TD-2 STORY, a book that was authored by A.C. Dickieson, and presented to
the museum by him. Both publications, as well as the time capsule story in the
BELL LABS NEWS present an excellent view of the TD-2 system for the person with
the curious mind!</DIV>
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<DIV>The TD-2 system and its steel and concrete towers was a communications
marvel! </DIV></DIV></FONT></BODY></HTML>