[QuadList] Servo Modes

[David Crosthwait]

I know of one TV station in the seventies in a top ten market who owned 3 ACR 25's. Two for commercial air and one exclusively for news casts. All film or ENJ were loaded to individual ACR cassettes and zero rolled during the newscast. I believe the TD was the newscast director. The anchor pitched to the story, then roll and take simultaneously. It made for a very tight and fast newscast.

One station in LA had ACR-25's then ACR 225's. There was not enough Kleenex in the house for the tears that were shed for years afterwards having to give up their ACR-25's. They eventually got over that by getting rid of the ACR-225's. 

Regards,

David Crosthwait
DC Video
Videotape transfers and more!
david at dcvideo.com
www.dcvideo.com
Follow DC Video on Facebook: https://www.facebook.com/dcvideo



On Aug 24, 2012, at 8:23 AM, Trevor wrote:

> 
> I was at an ITV network TV station with around 6 million viewers and yes we
> started live to air with TCR100's
> I think it fair to say TC100's are not as reliable as the ACR25
> RCA did not have good digital TBC
> The RCA Pinch roller less Capstan had its problems as did the cassette
> design
> 
> Everything could have been sorted except for misinformation "pinch roller's
> do not go wrong"
> "The cassette box is not in circuit once the tape has threaded", were the
> main themes of misinformation
> 
> When the engineer Bill ..... who's name will come to me turned and spoke the
> truth
> Changing Pinch roller capstan assemblies and rejecting new ones RCA sent
> and showing how to diagnosed faulty cassettes then they could have continued
> to be live
> 
> Alas by that time the decision was not to go live but to copy breaks to tape
> and they were never used again live on air
> 
> I do not blame engineers the misinformation came from the top of RCA
> Never went ACR25 they were replaced by BCN 100 and then Panasonic marc
> machines D3 decks
> 
> TrevorB
> UK Member 
> 
> 
> 
> 
> 
> 
> 
> -----Original Message-----
> From: quadlist-bounces at quadvideotapegroup.com
> [mailto:quadlist-bounces at quadvideotapegroup.com] On Behalf Of Dennis Degan
> Sent: 24 August 2012 15:07
> To: Quad List
> Subject: Re: [QuadList] Servo Modes
> 
> 
> 
> 		On Aug 24, 2012, at 12:50 AM, Wayne Watson wrote:
> 
>> Also related to a similar thread we (an independent station with no
> network spot support) ran our only ACR direct to air for many years.  
> It was something us techs were very proud of.
> 
> 		I say:
> 
> 	Not to throw cold water on it Wayne, but I don't know of a single TV
> station that DIDN'T run their cart machines live to air.  Only networks
> would do this (with the notable exception of NBC).  At the network level,
> where more money is at stake, reliability is of much higher priority than
> operator convenience.  Not only would CBS and ABC cut their commercials into
> the program masters, they would run two copies of the commercial-inserted
> program on the air simultaneously to  
> enable quick switching in case of a failure of the on-air tape.   
> Again, no local TV station I'm aware of did this.
> 
> 		Wayne also said:
> 
>> So......speaking of proud....it is absolutely amazing what engineers did
> 30 to 40 years ago with no  operating systems to take advantage of. Three
> developments to think about are the above fast lock VTR's; the Chyron and
> the ADO. I think most of this using massive TTL logic?  Someone can back me
> up here but I think the ADO had a 200 Amp 5 volt supply to run all those
> chips. The Chyron and ACR (logic
> bay) even did all this with wire wrap on the chips (I think).
> 
> 		I offer:
> 
> 	Wire wrap is very reliable.  Obviously, if the equipment was being
> built today, wire wrap would probably not be used because the method was
> more labor-intensive than others.  But it did have its advantages.
> 
> 			Dennis Degan, Video Editor-Consultant-Knowledge Bank
> 					     NBC Today Show, New York
> 
> 
> 
> 
> 
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