[QuadList] anyone have one of these colorizers!?

[Gary Adams]

Hi Scott.  Thanks for this.  It is a bit better.  I am really embarrassed
the photo is so bad. It was in the early 70s and I didn't think to set up a
proper photo even after all the work I had done.  The silver EMI chassis
were the actual bus switching and some of the internal DA amplifiers for the
switcher.  The Blue Riker chassis have the actual mixing, keying, and wipe
circuits for the switcher.  We had sort of the equivalent of 2 ME's, one
feeding the other.  This was the only switcher at the time and the On Air
switching had a cuts only section of the same electronics, however, PGM 1
and 2 could be put on the air or for production by the cuts switcher.  One
person did both on air and production switching which was mostly easy with
occasional double duty.  The Blue Riker section actually replaced two large
tube chassis, one was the mixer for dissolves and the other had the
oscillators for wipes.  I designed the changeover to solid state (what a
leap in technology) which produced a much cleaner dissolve.  It was great
fun and learned lots especially cutting cables down to the inch to make the
color right.  I wish I had kept something of that era but I moved on to
other things that I wish I had kept.  

 

Gary

 

From: QuadList [mailto:quadlist-bounces at quadvideotapegroup.com] On Behalf Of
Scott Thomas
Sent: Sunday, October 20, 2013 5:46 PM
To: Quad List
Subject: Re: [QuadList] anyone have one of these colorizers!?

 

Gary,

 

Thank for sharing this image. I have that same slide scanner and it takes a
ton of work to get a good image out of it. I enhanced your picture to try
and read the identifying marks.

 

https://www.dropbox.com/s/w1j4serfoofir92/7619582330_a400314f59_o.jpg

 

I won't keep it there permanently, so save it if you want it please.

 

So, if I'm reading it correctly the mixer is an EMI?

 

I had a friend named Kelly Hickok who worked at KOLN, probably in the early
1980's.

 

Thank you again,

Scott Thomas

On Oct 20, 2013, at 08:34 AM, Gary Adams <garyaadams at gmail.com> wrote:

We used one of these at KOLN in Lincoln.  Originally It was a separate frame
but was integrated with the mixing electronics.  Here is a poor photo of the
mixing electronics and switcher rack.  We only used the colorizer as a color
background generator but if you fed video into the unit, you could get more
or less a different color at different luminance levels.  I don't think I
saw us use it other than playing around.  

 


L101689 KOLN-TV <http://www.flickr.com/x/t/0095009/gp/gary_adams/e56nqW>
Switcher Rack


 

The Riker modules in the three chassis were actually copied by the
Engineers.  Some modules were bought and others were hand made from the
schematics.  I wish I would have kept the schematics because a single module
was drawn on one sheet of paper about 20 feet long.  Giant transistors.  I
had a Riker sync generator at home but didn't keep any of it.  

 

Gary

 

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