[QuadList] Servo Modes

[Dennis Degan]

		I previously said:

 > 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.

		On Aug 24, 2012, at 11:25 AM, kylebook at aol.com wrote:

 > Not sure if this was standard operating procedure at other local  
stations carrying live sports events, but during my time at WHCT in  
Hartford, CT, when they carried a live Hartford Whalers hockey  
telecast, they did not use their spot playback system (The LaKart 3/4"  
system), but instead ran the spots from compilation reels.  The reason  
behind this, similar to the network philosophy, was that these were  
high revenue generating commercials, where operational failure & "make  
goods" were just not option.

		I respond:

	I'm not saying that local stations didn't EVER use a Primary/Backup  
procedure or produce compilation tapes for air.  I should have  
included "as their normal operating procedure" in my comment.  I  
believe that at that time, it was standard operating procedure to only  
use one cart machine directly on-air at most TV stations.  Most  
stations only had one cart machine (all the stations I worked at that  
had cart machines each had only one).  The stations that had more than  
one were still not known to have used a pair of them as Primary/Backup  
like a network would have done.  Even so, they all used them directly  
to air, except in those instances as Kyle described.
	One of the stations I worked at originated a 10-station regional  
basketball network.  During the game, they aired their local  
commercials from the cart machine and the basketball network  
commercials ran from a single compilation quad tape (not a pair of  
Primary/Backup machines).  The station only had one ACR-25 and two  
Ampex VR-1200's.

			Dennis Degan, Video Editor-Consultant-Knowledge Bank
					     NBC Today Show, New York




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