[QuadList] AMPEX VR-5100 WILL IT PLAY OTHER MACHNESTYPE A TAP...

[Steve White]

IVC was the far superior machine ... because it was a totally different 
format.

You'll notice the Ampex used a moving pinch roller path with resulting 
omega wrap around the drum, while the IVC used a fixed path and alpha wrap.


On 5/16/14, 3:29 PM, COURYHOUSE at aol.com wrote:
>
>
> ok! then ivc is  not   type  A
> it is its own   format  huh?
> (In at case I hope  it was really  done on somethin else than an IVC!)
> Ed#
> In a message dated 5/16/2014 12:25:34 P.M. Mountain Standard Time, 
> dave at zfx.com writes:
>
>
>
>
>     Any tape made on an IVC 1" machine will definitely not play on an
>     Ampex 5100...
>     completely different format, head drum size, #heads, tape speed,
>     etc etc etc.
>
>
>     On Fri, May 16, 2014 at 3:20 PM, <COURYHOUSE at aol.com
>     <mailto:COURYHOUSE at aol.com>> wrote:
>
>
>
>         Don  -  Well if  we never getting it working that is ok too
>         as  we have an  Ampex camera that is a nice  match for it... 
>         the TelePrompTer   1 inch  tape   was  supposedly done    on a
>         IVC  so we  will try that.
>         If it  works that is  great as we  have no budget for outside
>         services   to  convert it! So  fingers are  crossed!
>         Ed#
>         In a message dated 5/16/2014 11:41:05 A.M. Mountain Standard
>         Time, dwnorwood at digitrakcom.com writes:
>
>
>
>
>             I agree with many of the comments on this thread, and to
>             be sure, the answer to Ed's question comes with many
>             qualifiers.  The primary reason that we use VPR-7900's for
>             recovery of Type-A tapes is their ability to handle all
>             three variants of the format's carrier frequencies. I
>             believe the 5100 is low band only which was intended only
>             for black and white, but since the Ampex format was direct
>             record, you can still recover color from the lowband tapes
>             if they contain color material.  Obviously not the best
>             situation, but possible. Tapes recorded in hi-band or
>             very-high-band will not reproduce properly on a low-band
>             machine.
>             Regarding interchange, there's no doubt that the movable
>             guides were a bad design.  However, our experience has
>             shown that many of the interchange problems were the
>             result of incorrect adjustment of the machines more often
>             than "naturally occurring" changes in the guide path.
>             Because this was originally a "non-broadcast" format, much
>             of its use was in educational or industrial applications,
>             and generally with un-trained operators.  My favorite
>             example was a tape we received from a large university. 
>             It begins with no video, but on the audio track, you hear
>             "Hey Bill, how do you work this thing?".  Then the machine
>             was obviously stopped, and when it was re-started, there
>             was video, recorded with a setup level of about 70%!
>             The challenges of recovering Type-A tapes can be
>             significant, and we have even done custom modifications
>             when required for special problems if the budget was
>             available.  When the tapes are good, the quality,
>             especially from the VHB tapes can be excellent, but that
>             is certainly the exception rather than the rule.  Bottom
>             line is, we're talking about a format developed in the mid
>             60's, and a lot has changed since then!
>             Don Norwood
>             Digitrak Communications, Inc.
>             www.digitrakcom.com
>
>
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>     -- 
>     Dave Sieg
>     www.linkedin.com/in/davesieg <http://www.linkedin.com/in/davesieg>
>     www.davesieg.com <http://www.davesieg.com/>
>     www.scanimate. <http://www.scanimate.net/>com
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