[Milsurplus] RE: Transcription Disks

Wed, 1 May 2002 08:47:13 -0700

that was top say gloves on hands not groves  but I imagine the gloves
prevented the groves in the hands!

ed!
----- Original Message -----
From: "ed sharpe" <[email protected]>
To: "mikea" <[email protected]>
Cc: "Don Hendrickson" <[email protected]>; <[email protected]>
Sent: Wednesday, May 01, 2002 8:27 AM
Subject: Re: [Milsurplus] RE: Transcription Disks

> This also reminds me of  a great accounting of an early attempt by RCA to
> make a video recorder.... the heads did not scan... they just cranked the
> tape at an enormous rate past fixed heads.  to assist the stopping of the
> tape the operator would have thick groves on his hands......
>
> this was from the book fast forward chronicling the development of the
video
> tape industry...
>
> ed sharpe archivist  for smecc
> ----- Original Message -----
> From: "mikea" <[email protected]>
> To: "ed sharpe" <[email protected]>
> Cc: "Don Hendrickson" <[email protected]>; <[email protected]>
> Sent: Tuesday, April 30, 2002 6:10 AM
> Subject: Re: [Milsurplus] RE: Transcription Disks
>
>
> > On Mon, Apr 29, 2002 at 09:14:12PM -0700, ed sharpe wrote:
> > > Greetings!
> > >
> > > yes, 16 was a slow speed for transcription usage. if you really wanted
> some
> > > fidelity though you used  faster speeds.  the 16 would cover a longer
> period
> > > of time...
> > > sort of like the 3 speeds on a reel to reel tape  unit... fast sounds
> better
> > > slow covers more time..
> >
> > Three, yes -- or more, or fewer.
> >
> > One Ampex instrumentation tape drive I used to maintain and use
> > had speeds from 15/16 ips through 120 ips. Of course, it also
> > filled an 84" high rack, weighed 450 pounds, and used 9200-foot
> > reels of 2" tape, and had a top end of about 1.5 MHz at 120 ips.
> > The tape path used air bearings throughout, and it was made like
> > a (rather large, heavy, but beautifully precise) Swiss watch.
> >
> > And it was reel to reel. ;=)
> >
> > --
> > Mike Andrews
> > [email protected]
> > Tired old sysadmin since 1964
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> >
> >
>
>
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