[SBE] Cert Q 4

[Wilson Brown]

Beautiful!
 
Best Regards,
 
Louis Brown
(508) 294-5869



----- Original Message ----
From: "sue.thorwaldson at phoenix.gov" <sue.thorwaldson at phoenix.gov>
To: sbe member discussion mail list <sbe at sbe.org>
Sent: Thursday, November 15, 2007 2:58:32 PM
Subject: Re: [SBE] Cert Q 4

OK, I can't resist.  The correct answer is E, using Baird's phonovision
system in the 1920's.

Sue Thorwaldson
Media Specialist
602.261.8281
FAX  602.534.9790

        PHX 11
  "Where We Live"
www.phoenix.gov/11


                                                                          
            Wilson Brown                                                  
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Depends on what you mean by "first".

The first commercially available VTRs, being the Amprex VR1000 and the RCA
TR1 both ran at the standard audio tape machine speeds of 7.5 and 15 ips,
(although I never knew of any broarcaster that used anything but 15 ips).

There were experimental machines that had very high linear tape speeds,
that mainly proved that linear recording wasn't going to be practical. I've
heard horror stories about what happeded when some of those spinning reels
got loose in the lab. I believe the legendary Ed Mullin worked on such a
machine at 3M.

Best Regards,

Louis Brown
(508) 294-5869



----- Original Message ----
From: "A9xw at cs.com" <A9xw at cs.com>
To: sbe at sbe.org
Sent: Thursday, November 15, 2007 2:09:52 PM
Subject: [SBE] Cert Q 4

The first video recorder machines used this speed:

A.  7.5 IPS
B.  15 IPS
C.  120 IPS
D.  1200 IPS
E    78 RPM


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