roger.holmes at microspot.co.uk
Sun Feb 4 18:52:25 CST 2007
On 4 Feb, 2007, at 18:15, cctalk-request at classiccmp.org wrote:
> Message: 7
> Date: Sun, 04 Feb 2007 12:52:33 -0500
> From: "Bob Bradlee" <caveguy at sbcglobal.net>
> Subject: Re: Ampex Timeline
> To: "General Discussion: On-Topic and Off-Topic Posts"
> <cctalk at classiccmp.org>
> Message-ID: <200702041754.l14Hsgkx054201 at keith.ezwind.net>
> Content-Type: text/plain; charset="us-ascii"
> On Sun, 04 Feb 2007 09:32:29 -0800, Chuck Guzis wrote:
>> Another possiblity--the Ampex tape drives wouldn't have been standard
>> at the time; it would have been IBM 729's.
> Although there is little online about the earlt Ampex drives
> because they were goverment only.
> The following id from the Ampex timeline:
> 1950 Ampex introduces the first "dedicated" instrumentation
> recorder, Model 500, built for the U.S. Navy.
> 1954 Ampex introduces the first multi-track audio recorder derived
> from multi-track data recording
> Some food for thought ...
The machine in question was I understand 1959/60. I don't know the
release dates for the digital Ampex drives but ICT used them on the
which was released in 1962, though the tape drives were not immediately
available. These were one inch tape drives (Ampex TM1 I think) and
drives (Ampex TM4). These used the aluminium spools with three notches
in the hub not the later industry standard expanding hub type spools.
one inch tapes were 16 track and the half inch tapes were 10 track. They
used thyrotron valves to fire the pinch rollers. The TM4s also had a
used on the Lyons Leo computers of that era, these used the same tape
spools but with a small expanding hub, like a scaled down version of the
7 track and 9 track ones. Professional reel to reel audio equipment used
a quarter inch version of the same spools until recently, or maybe they
still do for all I know about audio recorders.
By the way, as Dr Who has been deemed to be on topic:
ICT 1301 consoles appeared on Dr Who and Blakes 7. I think I saw one in
a James Bond film too, but I have been trying to find which one but
far drawn a blank. In the villains HQ there was a big round room on
and in the middle were some control panels, the whole place got blown
is normal in a 007 film. Must have been filmed about the time 1301s were
being scrapped 1965 to the early 70s.
Roger Holmes (owner of an ICT 1301 for over 30 years)
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