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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><div><br class="webkit-block-placeholder"></div><div>Sounds like fun! Enjoyed the video.</div><div><br></div><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><div><br class="webkit-block-placeholder"></div><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><div><br class="webkit-block-placeholder"></div><br><div> <span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; ">Ted Langdell</font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; ">209 East 12th Street</font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; ">Marysville, CA 95901</font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; ">Main: <span class="Apple-tab-span" style="white-space: pre; "> </span>(530) 741-1212</font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; ">Cell: <span class="Apple-tab-span" style="white-space: pre; "> </span>(530) 301-2931</font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 12px/normal Helvetica; min-height: 14px; "><br></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; ">Secretary for the <a href="http://www.quadvideotapegroup.com/"><font color="#0018ea" style="color: rgb(0, 24, 234); "><u>QuadVideotapeGroup.com</u></font></a></font><font face="Helvetica" size="2" style="font: normal normal normal 10px/normal Helvetica; ">: </font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; ">Preserving Tape, Equipment and the Knowledge to use them, in conjunction with the Library of Congress</font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" color="#0018ea" style="font: normal normal normal 12px/normal Helvetica; color: rgb(0, 24, 234); "><a href="mailto:ted@quadvideotapegroup.com"><u>ted@quadvideotapegroup.com</u><u></u></a></font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 14px/normal Helvetica; min-height: 17px; "><br></div></div></div></div></div></div></span></span></span></div></div></body></html>