[QuadList] AVR-2 on eBay

[Trevor Brown]

Bill

I fought hard at the time to stop the company buying RCA machines with this
option

The 602 was a poor vector scope and was dependent on the picture monitor if
that went down you lost the 602 display

 

I was personally happy for a B/W monitor in the bridge, turn the brightness
down and it shows head banding up better than a color monitor

but I still want a color monitor somewhere in the system, in PAL you can get
the burst to chroma phase 180 degrees out and it looks OK on a vector scope.

 

I could live with a slot monitor for this, if it was a choice that or a
Delta gun that never really converged, and most available at the time were
un reliable,

I think we ended up with Barco monitors in the end, but not in the bridge

Trevor 

UK Member

 

 

From: quadlist-bounces at quadvideotapegroup.com
[mailto:quadlist-bounces at quadvideotapegroup.com] On Behalf Of Bill Carpenter
Sent: 23 April 2010 06:06
To: Quad List
Subject: Re: [QuadList] AVR-2 on eBay

 

Hey Chris,

I forgot one thing, in 1976 that machine was worth 100K$, and the fully
loaded monitor bridge, was worth twice the current asking price. It sold for
over 10K$, and Ampex was Tektronix's largest single customer, because of the
way the bridge was configured. 

I was told that broadcasters would not buy a color "slot mask" monitor made
from a consumer product (14" Sony Trinatron) in each tape machine. The thing
that made it work was the decoder in the monitor, which drove the 602
display, to allow you to "phase up the machine" for playback without a
external Vectorscope!

The NTSC pushbutton was required since the colors in the flesh tones were
wrong compared to Conrac (dot matrix, USA color based) monitors.

So, in the first year over 80% of the 256 machines we shipped went with the
fully loaded bridge worth over 10K$ 

But, then I had only been involved with broadcast products for a year and a
half and really didn't know anything about products for the broadcast
marketplace?

Bill Carpenter

  _____  

From: "Chill315 at aol.com" <Chill315 at aol.com>
To: dwnorwood at embarqmail.com; quadlist at quadvideotapegroup.com
Sent: Thu, April 22, 2010 6:30:59 PM
Subject: Re: [QuadList] AVR-2 on eBay




The serial number is low, 352.  It looks like they updated it with the
digital timer.  If you will note, it does not have the circuit breaker kit.
One would want to consider a couple of field mod upgrades to it but it does
look in good shape from the photos.  It should be in the range where the
design was fairly stable.

 

Chris

 

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