<html><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:12pt"><div><span>TR-800 audio may have been bad but the TBC was the most pathetic contraption I've ever had to deal with. Set the SCH to 0 at 3pm and it may need adjustment by 3:30. We did come up with a repair that actually fixed the problem by eliminating the XOR phase comparator and replacing it with a charge pump type - ironically built by RCA in the CD4046 PLL chip. After the mod you could set the SCH on Jan 1 and you might want to check it in June. Changing the FF/REW tension from 12 Oz to 9 Oz slowed the acceleration some but got rid of the erratic tendency to snap tapes. The REAL lesson was the the operators LIKED these thing and complained when we got some VPR-6s and BVH-3000s. Video Stockholm syndrome?<br></span></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: "Times New Roman"; background-color:
transparent; font-style: normal;"><span><br></span></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: "Times New Roman"; background-color: transparent; font-style: normal;"><span>G²<br></span></div><div><br></div> <div style="font-size: 12pt; font-family: "times new roman", "new york", "times", serif;"> <div style="font-size: 12pt; font-family: "times new roman", "new york", "times", serif;"> <div dir="ltr"> <hr size="1"> <font size="2" face="Arial"> <b><span style="font-weight:bold;">From:</span></b> Ted Langdell <ted@quadvideotapegroup.com><br> <b><span style="font-weight: bold;">To:</span></b> Quad List <quadlist@quadvideotapegroup.com> <br><b><span style="font-weight: bold;">Cc:</span></b> Del Holford <del.edits@gmail.com> <br> <b><span style="font-weight: bold;">Sent:</span></b> Monday, July 1, 2013 10:14 PM<br> <b><span style="font-weight:
bold;">Subject:</span></b> [QuadList] PTL Club--Quad duplication 1974-78--What do you know?<br> </font> </div> <div class="y_msg_container"><br><div id="yiv0749575820"><div><div>Greetings from the thermally active West... where the the Central Sacramento Valley was up into the 108+ range today while Pacifica, just south of San Francisco had 60 and a fog-bank around dinnertime.</div><div><br></div><div>Had an e-mail from Del Helford, a former Quad operator and later Quad editor at PTL who is trying to help a Univ. of Missouri professor with some history.</div><div><br></div><div>He was trying to come up with details about the duplication process a contractor or contractors used to make copies of the shows for bicycle distribution to stations. He refers to it as high speed and as "magnetic duplication" and believes they "used NET in Washington and the Videotape Company (Atlanta?)" from 1974-78.</div><div><br></div><div>What does the collective
memory of 150+ QuadList members recall?</div><div><br></div><div>I've referred him to the March, 2010 QuadList discussions about the <a rel="nofollow" target="_blank" href="http://mail.quadvideotapegroup.com/pipermail/quadlist_quadvideotapegroup.com/2010-March/002518.html">Ampex ADR-150</a> and to several related SMPTE articles about contact duplication of Quad tape that appeared in the Journal.</div><div><br></div><div>Del notes he "was a videotape operator on RCA TR70c's at the PTL Television Network from 1977 until 1979 when I began to edit on a nixie tube RCA/Convergence Time Code Editor."</div><div><br></div><div>He adds, "The TR70c was a good machine and one of our engineers made them RS170a compliant for frame accurate editing. Eventually PTL went to Ampex VPR2b's in 1981 although we had some AVR2's and I used one in 1988 to edit the 3/4" on IHRA Drag Racing for ESPN. No losses on the dub to Quad or on the layback to
RCA TR800 1" type C machines.</div><div><br></div><div>The TR800 had the worst audio pre-amps. They copied Sony's TH1100A's and should have copied the audio section."</div><div><br></div>Del has more recent ties to Charlotte's PBS station.<div><br></div><div>Any help would be appreciated, and I've invited him to join the crowd in the tape room, here.</div><div><br></div><div>Cheers and stay cool.</div><div><br></div><div>Ted<br><div>
<span class="yiv0749575820Apple-style-span" style="font-size:14px;"><div style="word-wrap:break-word;"><span class="yiv0749575820Apple-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;"><div style="word-wrap:break-word;"><span class="yiv0749575820Apple-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;"><div><font class="yiv0749575820Apple-style-span" size="3"><span class="yiv0749575820Apple-style-span" style="font-size:12px;"><br class="yiv0749575820Apple-interchange-newline">Ted
Langdell</span></font></div><div><span class="yiv0749575820Apple-style-span" style="font-size:12px;">Secretary</span></div><div><font class="yiv0749575820Apple-style-span" size="3"><span class="yiv0749575820Apple-style-span" style="font-size:12px;">Skype: <span class="yiv0749575820Apple-tab-span" style="white-space:pre;"> </span>TedLangdell</span></font></div><div><font class="yiv0749575820Apple-style-span" size="3"><span class="yiv0749575820Apple-style-span" style="font-size:12px;">e-mail:<span class="yiv0749575820Apple-tab-span" style="white-space:pre;"> </span><a rel="nofollow" ymailto="mailto:ted@quadvideotapegroup.com" target="_blank" href="mailto:ted@quadvideotapegroup.com">ted@quadvideotapegroup.com</a></span></font></div></span></div></span></div></span>
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