[QuadList] Gene Kelley Show color recording system

[Don Norwood]

Merlin apparently used several different TBC's in their quad machines over 
the years.  According to their literature, in addition to the NEC unit that 
they used in Park's machine, they also used....

1)  A modified Ampex TBC-800.  I believe this may have been one of their 
first TBC mods and dates to the mid 70's.

2)  NEC NTC 5000

3)  Adda VW-2

In all cases, the literature indicates that Merlin performed some degree of 
modification to all of these TBCs, so it's unclear how well a stock unit 
would perform with a quad.

Don

----- Original Message ----- 
From: "C. Park Seward" <park at videopark.com>
To: "Quad List" <quadlist at quadvideotapegroup.com>
Sent: Sunday, January 04, 2009 1:34 PM
Subject: Re: [QuadList] Gene Kelley Show color recording system


> The data on the NEC-10B TBC:
>
> Response:  flat to 5.5 MHz
> S/N Ratio:  67 db
> Diff Phase/Gain:  .8%
> Output jitter:  <1ns
>
> Serial# T-1128, November 1983
>
> It cost $30,000 to refurn a single machine in 1983.
>
> Best,
> Park
>
> C. Park Seward
> Cell: 818-535-2747
> Home: 949-679-1870
> Visit us: http://www.videopark.com
>
>
>
> On Jan 4, 2009, at 8:46 AM, WVGO wrote:
>
>> Hi Park....
>> I've been wanting to experiment with an outboard TBC on a quad for  some 
>> time.  What model is your NEC TBC?  Does it also have dropout 
>> compensation built in?
>> Apparently, very few digital time base correctors out there are  designed 
>> to deal with the line to line errors inherent in quad.  I  know that 
>> Harris made one, but I didn't know of any others.
>> Guy
>> www.GuySpiller.com
>>
>>
>>
>> C. Park Seward wrote:
>>> Thanks, Phillip. Excellent discourse.
>>>
>>> One of my 1200s has a NEC TBC and does an excellent job fixing  velocity 
>>> errors. I will restore next a 1200B with the standard  Ampex Amtec, 
>>> Velcomp and Colortec.
>>>
>>> Best,
>>> Park
>>>
>>> C. Park Seward
>>> Visit us: http://www.videopark.com
>>>
>>>
>>>
>>
>>
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>
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