[QuadList] Tape Delay Systems

Sun Apr 15 00:19:08 CDT 2012

?or  they can bleep the audio out  also? ( heh an audio  insert!)

Ed#

In a message dated 4/14/2012 9:37:20 P.M. US Mountain Standard Time,  
david at dcvideo.com writes:

Tony  Quinn's posting which included the picture identified as "abchot" was 
similar  to NBC Burbank's VTR 13-15 delay for live shows such as "Real 
People", a once  a week program feeding the East from studio 4. This delay was 
about 7 seconds  long. Two RCA TR 70B's side-by-side had a loop that went 
basically vertical  the entire length of the rack IIRC. If Standards and 
Practices didn't like  something said, it could be deleted (at least audio wise) 
or with a cutaway  shot if visual. I think NY had something similar.  

Best Regards,

David Crosthwait
DC Video
_www.dcvideo.com_ (http://dcvideo.com/) 

On Apr 14, 2012, at 9:26 PM, Bill Carpenter wrote:

Hi Folks,

I think the best engineered and best looking delay was produced  by a San 
Francisco VHF station (I think it may have been a Westinghouse  station?) 
where they used a pair of AVR-3's and cut a slot in the frame and  the right 
side panel of the record machine and the left side of the play  machine. 

The machines were anchored and mechanically connected and the  tape exited 
the record machine went around a roller guide (Idler) and then  went up to 
the high ceiling and then across a couple of feet to the proper  spot above 
the play machine and then back down to a similar roller guide  where the tape 
made the 90 degree turn into the supply side of the play  machine. The 
roller guides were used at each tape turn point. It was a  precision designed 
system and worked well.

I believe the goal was a 7-10 second delay for a live street  interview 
that came in by microwave every weekday in the late  afternoon.
The controls for the two machines were integrated using the  extensive 
remote editor controls that were part of the AVR-3's

I explained this system to Dave Rodahl (reel servo designer) and  Al Trost 
(VPR-3 Project Engineer) in 1982 and we proved that the VPR-3's  could be 
easily used as a similar tape delay system. I don't know it anyone  ever tried 
it, but I knew it would work.

Bye for now, Bill & Gewyn & Ginger (whoof...whoof)

____________________________________
 From: Tony Quinn <_tony at tqvideo.co.uk_ (mailto:tony at tqvideo.co.uk) >
To: _quadlist at quadvideotapegroup.com_ 
(mailto:quadlist at quadvideotapegroup.com)   
Sent: Saturday, April 14,  2012 7:33 PM
Subject: Re:  [QuadList] Quad mystery photo quiz of the week

In  message <_F6BA545D-47E5-411B-B6AE-ACB4DF59A089 at dcvideo.com_ 
(mailto:F6BA545D-47E5-411B-B6AE-ACB4DF59A089 at dcvideo.com) >,  David 
Crosthwait <_david at dcvideo.com_ (mailto:david at dcvideo.com) >  writes
>Hi Bill,
>
>That's an interesting Compact Video  story about that VR-3000/VR-1000
>setup. Wish I could have seen it.  Unfortunately that is not the machine
>in the picture. The answer is  coming tonight. It does remind me of a
>story I was told last weekend  over dinner by a friend who used to work
>at WJZ channel 13 in  Baltimore. He told me they had a tape delay rig
>that recorded on a  VR-1000 flat top feeding tape vertically to a
>VR-1200. I would have  loved to have seen that in operation!

Well before my time,  but

_http://www.vtoldboys.com/hotline.htm_ 
(http://www.vtoldboys.com/hotline.htm) 
--  
"Remember how stupid the average person is, then realize that half of  them 
are
stupider than that.  - G. Carlin"

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