<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>David,<br><br>Did that include color as well as monochrome broadcasts?</div><div id="AppleMailSignature"><br></div><div id="AppleMailSignature">You have me trying to remember what Grass Valley Group called it's method of doing something similar. </div><div id="AppleMailSignature"><br><div><span style="background-color: rgba(255, 255, 255, 0);">Ted</span></div><div><span style="background-color: rgba(255, 255, 255, 0);"><br></span></div><div><span style="background-color: rgba(255, 255, 255, 0);">Ted Langdell</span></div><div><span style="background-color: rgba(255, 255, 255, 0);">Secretary, Quad Videotape Group</span></div><div><span style="background-color: rgba(255, 255, 255, 0);"><a href="mailto:Ted@quadvideotapegroup.com">Ted@quadvideotapegroup.com</a></span></div><div><span style="background-color: rgba(255, 255, 255, 0);">(530)301-2931</span></div><div><br></div><span style="background-color: rgba(255, 255, 255, 0);">Dictated into and Sent from my iPhone, which is solely responsible for any weird stuff I didn't catch.</span><br><div><span style="background-color: rgba(255, 255, 255, 0);"><br></span></div></div><div><br>On Jul 10, 2017, at 9:30 AM, David Crosthwait <<a href="mailto:david@dcvideo.com">david@dcvideo.com</a>> wrote:<br><br></div><blockquote type="cite"><div><meta http-equiv="Content-Type" content="text/html charset=utf-8">Very similar to the CBS “wire-lock“ system to lock remotes to NYC master control. It used a rubidium frequency standard and an audio line to have NYC slowly “steer” the remote sync gen. to be in-phase. While doing hours of OTA digitization of ’68 election coverage and RFK assassination material, it became clear that CBS had this system woking very well. <div class=""><br class=""></div><div class=""><br class=""><div class="">
David Crosthwait<br class="">DC Video Corp.<br class="">Archived Videotape Remastering<br class=""><br class=""><a href="http://www.dcvideo.com" class="">www.dcvideo.com</a>
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<br class=""><div><blockquote type="cite" class=""><div class="">On Jul 10, 2017, at 8:47 AM, Chuck Reti via QuadList <<a href="mailto:quadlist@quadvideotapegroup.com" class="">quadlist@quadvideotapegroup.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div class="" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;">One technical aspect of this that I do remember was that the NOC was sending all feed points an audio tone on one of the telco lines, to use as a kind of gunlock clock.</div><div class="" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;">The tone (don’t remember the freq, could have been 3150) fed a magic box they provided that multiplied it up to 31.5kHz. Our monochrome sync gen had a 31.5 input for this purpose, so we would be in time with everyone else. During pre-feed there were also some tweaks to this, maybe for H-phasing. Our outgoing feed was telco microwave (thanks to Michigan Bell).</div></div></blockquote></div><br class=""></div></div></blockquote></body></html>