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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>One of my favorite stories (Phillip can correct me if I’m
wrong) was about the guide assembly. We all know this is the most
important piece that affects interchange the most. Ampex seemed to have
it right with the steel band. Sony and RCA had aluminum which wore out
way too early. Not the actual entrance and exit guides, but the tape path
guide rabbit (or some strange animal) was machined at a vendor in Philadelphia.
Very critical design, of course. “Sure”, the vendor said.
“I’ll make all the guides you want for X dollars and you will buy
them all, rejecting none”. And that’s what they did. They
built a complex measuring device on “Rock of Ages” (loved those
perfectly smooth marble tables), using microscopes and cameras. The guide
would turn and the track would be measured for acceptability. If within
certain limits, it would be accepted. Of course it was difficult to
achieve certain limits. That’s why I didn’t like wearing down
the first 100 hours on a guide that probably didn’t last 1000. <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>The other fun thing was in the audit room where we cycled the
machines. They would run all night and we would often hold our fingers
when we walked in the next morning to find piles of tape on the floor. The actual
problem was the design of the power transistors and not completely the design
of the circuit. They would collect the bad ones and send them back to the
vendor (which happened to be RCA) for analysis. There were flaws in
the components and were found to be operated within tolerances. Once they
got past this, there were fewer of this type of failure. Other things
caused this as well, but the faulty transistors were a big part of it.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I enjoyed the sunsets looking West across the Delaware over
Philadelphia. I tried to take may camera in to take pictures of the sunsets
but for some reason they didn’t like that idea.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Gary<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
quadlist-bounces@quadvideotapegroup.com
[mailto:quadlist-bounces@quadvideotapegroup.com] <b>On Behalf Of </b>Ted
Langdell<br>
<b>Sent:</b> Thursday, February 24, 2011 3:31 PM<br>
<b>To:</b> Quad List<br>
<b>Subject:</b> Re: [QuadList] From the TR 800 Crypt--Questions seeking answers<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Philip,<o:p></o:p></p>
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<p class=MsoNormal><o:p> </o:p></p>
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<p class=MsoNormal>Thanks Very Much! This provides a great deal of
background that I'm sure others will enjoy reading, and provides more context
to the history of RCA's tape machines and the people who were involved.<o:p></o:p></p>
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<p class=MsoNormal><o:p> </o:p></p>
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<p class=MsoNormal>Feel free to describe your experiences with the training
side. Any tips or techniques would be much appreciated.<o:p></o:p></p>
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<p class=MsoNormal><o:p> </o:p></p>
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<p class=MsoNormal>Ted<o:p></o:p></p>
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<p class=MsoNormal><o:p> </o:p></p>
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<p class=MsoNormal><o:p> </o:p></p>
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