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<DIV>I have the stuff for the first experimental microwave link
from studio to mt wilson... a bell labs experiment log
books by Ken Smith.</DIV>
<DIV> </DIV>
<DIV>also have a pretty good stash of info on TD-2 also.</DIV>
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<BLOCKQUOTE
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: blue 2px solid"><FONT
style="BACKGROUND-COLOR: transparent" face=Arial color=#000000 size=2>Hi,
Park,
<DIV><BR>
<DIV>
<DIV>On Dec 2, 2008, at 8:20 AM, C. Park Seward wrote:</DIV><BR
class=Apple-interchange-newline>
<BLOCKQUOTE type="cite">
<DIV>The TV sitcom looks especially good as a direct recording from the
network line.</DIV></BLOCKQUOTE></DIV>
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<DIV>Sounds like fun! Enjoyed the video.</DIV>
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<DIV>Do you know when and at what point along the CBS network the Green Acres
recording was made?</DIV>
<DIV><BR></DIV>
<DIV>Wondering how the sound sounds... since in the early days of network
television had sound carried by conventional copper, like radio network sound
and picture was carried by coax and microwave relay.</DIV>
<DIV><BR class=webkit-block-placeholder></DIV>
<DIV>Not sure when AT&T piggybacked the sound with the picture—called
"multiplexing" as I recall—but David Crosthwait has mentioned the relatively
inferior quality of recordings made "off the line" at West Coast points
(including network delay centers in LA and Burbank) because of the limited
frequency response of the separate audio lines.</DIV>
<DIV><BR class=webkit-block-placeholder></DIV>
<DIV>The telco folks also had to work out some sound/picture sync issues
because the sound and picture had different propagation characteristics due to
the technology used for each.</DIV>
<DIV><BR class=webkit-block-placeholder></DIV>
<DIV>After they learned to multiplex the audio with video and delivered it
on—want to say 110ohm balanced copper—things got better in terms of frequency
response, and audio-video out of sync issues.</DIV>
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<DIV>I googled a while to find some links to the multiplexing process, but
didn't come up with anything. As I recall, the video went as baseband,
and the audio was on a carrier above the video.</DIV>
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<DIV style="MARGIN: 0px"><FONT style="FONT: 12px Helvetica" face=Helvetica
size=3>Ted Langdell</FONT></DIV>
<DIV style="MARGIN: 0px"><FONT style="FONT: 12px Helvetica" face=Helvetica
size=3>209 East 12th Street</FONT></DIV>
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size=3>Cell: <SPAN class=Apple-tab-span style="WHITE-SPACE: pre">
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