[QuadList] Looking for contact to retrieve an old show--Remote genlock methods

[Ted Langdell]

David,

Did that include color as well as monochrome broadcasts?

You have me trying to remember what Grass Valley Group called it's method of doing something similar.  

Ted

Ted Langdell
Secretary, Quad Videotape Group
Ted at quadvideotapegroup.com
(530)301-2931

Dictated into and Sent from my iPhone, which is solely responsible for any weird stuff I didn't catch.


> On Jul 10, 2017, at 9:30 AM, David Crosthwait <david at dcvideo.com> wrote:
> 
> Very similar to the CBS “wire-lock“ system to lock remotes to NYC master control. It used a rubidium frequency standard and an audio line to have NYC slowly “steer” the remote sync gen. to be in-phase. While doing hours of OTA digitization of ’68 election coverage and RFK assassination material, it became clear that CBS had this system woking very well. 
> 
> 
> David Crosthwait
> DC Video Corp.
> Archived Videotape Remastering
> 
> www.dcvideo.com
> https://www.facebook.com/dcvideo/
> https://www.dcvideo.com/news/
> 
> 
>> On Jul 10, 2017, at 8:47 AM, Chuck Reti via QuadList <quadlist at quadvideotapegroup.com> wrote:
>> 
>> One technical aspect of this that I do remember was that the NOC was sending all feed points an audio tone on one of the telco lines, to use as a kind of gunlock clock.
>> The tone (don’t remember the freq, could have been 3150) fed a magic box they provided that multiplied it up to 31.5kHz. Our monochrome sync gen had a 31.5 input for this purpose, so we would be in time with everyone else. During pre-feed there were also some tweaks to this, maybe for H-phasing. Our outgoing feed was telco microwave (thanks to Michigan Bell).
> 
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