<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META content="text/html; charset=iso-8859-1" http-equiv=Content-Type>
<META name=GENERATOR content="MSHTML 8.00.6001.18882">
<STYLE></STYLE>
</HEAD>
<BODY bgColor=#ffffff>
<DIV><FONT size=2 face=Arial>Thanks for those great photo's Don. It's
interesting to know that there were a lot of variations. I always thought that
the U.S. taxpayers had probably paid some "really big dollars" for a very one
-time design in a VTR. At least it seemed that at the time.</FONT></DIV>
<BLOCKQUOTE
style="BORDER-LEFT: #000000 2px solid; PADDING-LEFT: 5px; PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: black"><B>From:</B>
<A title=dwnorwood@embarqmail.com href="mailto:dwnorwood@embarqmail.com">Don
Norwood</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=quadlist@quadvideotapegroup.com
href="mailto:quadlist@quadvideotapegroup.com">Quad List</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Sunday, April 18, 2010 12:25
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [QuadList] RCA 2 channel (8
head)</DIV>
<DIV><BR></DIV>
<DIV>Hi Steve:</DIV>
<DIV> </DIV>
<DIV>Both RCA and Ampex built transverse scan recorders with 8 heads.
There were designs that had all 8 heads on a single drum as well as designs
that had two drums sandwiched together. There were many different
applications for these and machines were manufactured starting
in the early '60's. In addition to the 8 head versions, there
were also a variety of slow speed designs which had some unique headwheels,
some even utilizing belt driven drums! I've collected some head
assemblies as well as some documentation on some of these systems, and
included a few pics below.</DIV>
<DIV> </DIV>
<DIV><STRONG>Here's a "late model" RCA, 8 heads on single drum</STRONG></DIV>
<DIV><IMG border=0 hspace=0 alt="" align=baseline
src="cid:F122948DD225439C94E527A7FF0C60F1@Instrumate"></DIV>
<DIV> </DIV>
<DIV><STRONG>This is a "late model" Ampex</STRONG></DIV>
<DIV><IMG border=0 hspace=0 alt="" align=baseline
src="cid:7725E29897724A0391BE913A13D6DCA6@Instrumate"></DIV>
<DIV> </DIV>
<DIV><STRONG>This is an "early model" Ampex with "sandwiched"
heads</STRONG></DIV>
<DIV><IMG border=0 hspace=0 alt="" align=baseline
src="cid:9BF5CAEE86F84CEE8A8559DB5F18F9E1@Instrumate"></DIV>
<DIV> </DIV>
<DIV><STRONG>And then an RCA Belt driven design. Note the slip rings on
both ends for balanced circuits on all heads.</STRONG></DIV>
<DIV><IMG border=0 hspace=0 alt="" align=baseline
src="cid:0DFAA35D3AF240FA88904C06DCF68C1F@Instrumate"></DIV>
<DIV> </DIV>
<DIV>If I ever get all the videotape machine info on my website, I may start a
section for other transverse systems. There really were some interesting
designs through the years.</DIV>
<DIV> </DIV>
<DIV>Don Norwood<BR>Digitrak Communications, Inc.<BR><A
href="http://www.digitrakcom.com">www.digitrakcom.com</A></DIV>
<BLOCKQUOTE
style="BORDER-LEFT: #000000 2px solid; PADDING-LEFT: 5px; PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: black"><B>From:</B>
<A title=stevespears@kel.com href="mailto:stevespears@kel.com">Steve
Spears</A> </DIV>
<DIV><BR></DIV>
<DIV><FONT size=2 face=Arial>While the RCA headwheel discussion was going
on, I was reminded of the RCA 2 channel, 8 head machinhe that was built for
some radar recording on the USS Chicago Missle Cruiser. </FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>While I was stationed at 32nd Street in San
Diego 1970, at the inactive ship facility, it was removed from the Chicago,
over at North Island and put into salvage and disposal for the surplus
sale.</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>Somebody must have bought it for a nickel a
pound. I can remember slowly turning the headwheel and counting 8
heads. I did some asking around and found out that it was used for
radar recording and was especially set up for two channel.</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>Wonder where it is now.</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>Steve Spears</FONT></DIV>
<DIV><FONT size=2 face=Arial><A
href="http://www.kel.com">www.kel.com</A></FONT></DIV>
<DIV><FONT size=2 face=Arial>Orrs Island, Maine</FONT></DIV>
<P></P></BLOCKQUOTE>
<P>
<HR>
<P></P>_______________________________________________<BR>Please trim posts to
relevant info when replying!<BR>Send QuadList list posts to
QuadList@quadvideotapegroup.com<BR>Your subscribe, unsubscribe and digest
options are
here:<BR>http://mail.quadvideotapegroup.com/mailman/listinfo/quadlist_quadvideotapegroup.com
<P>
<HR>
<P></P><BR>No virus found in this incoming message.<BR>Checked by AVG -
www.avg.com <BR>Version: 9.0.801 / Virus Database: 271.1.1/2818 - Release
Date: 04/18/10 02:31:00<BR></BLOCKQUOTE></BODY></HTML>