[QuadList] Smith splicer, etc.
Don Norwood
dwnorwood at embarqmail.com
Thu Oct 14 16:43:12 CDT 2010
Hi Park:
I agree, a 1200 will play a standard LBM tape just fine. The problem is when the original recording was made with improper carrier frequencies and/or deviation. When that results in almost no sync amplitude, lots of things get "nervous"!
Don Norwood
Digitrak Communications, Inc.
www.digitrakcom.com
----- Original Message -----
From: C. Park Seward
To: Quad List
Sent: Thursday, October 14, 2010 5:04 PM
Subject: Re: [QuadList] Smith splicer, etc.
Actually, my 1200B plays LBM perfectly with the NEC TBC.
Let me know if I can be of help.
Best,
Park
C. Park Seward
818-535-2747 cell
541-476-6657 home
Visit us at: www.videopark.com
Sent from my iPhone 4
On Oct 14, 2010, at 1:16 PM, Tom Evans <tom at tom-evans.com> wrote:
Bill,
Most of the Low Band Mono tapes I recall were recorded with a 5 mil head (not the standard 10 mil head).
The digital TBCs of the AVR-2 and TR-600 generation were clocked by an oscillator locked to colorburst. What happens when no colorburst is present? Perhaps a VR-1200 with AMTEC could do better.
-Tom Evans (with more questions than answers)
On Thu, Oct 14, 2010 at 2:41 PM, <bill.spencer at northstarstudios.tv> wrote:
All,
I am working on a recovery project and have had a splice part on me. If anyone knows of a Smith splicer or a 2” audio straight cut splicer in or near Nashville that I could borrow for a few days please let me know.
Also, some of these tapes were recorded with improper deviation in LBM and the sync is low. I can turn the demod level up so that the sync locks and then run the video through a proc amp to bring it back to normal, but it is still causing the MTBC in my TR-600 to have an excessive amount of jitter. Does anyone know of some old tricks to make a TR-600 play LBM better? Was there ever a LBM demod for the AVR-2 or has anyone successfully modified one? I have two extras so I have something to experiment with.
Tapping the well of all wisdom for all things quad, I thank you in advance.
Bill Spencer
RF Engineering Supervisor
NorthStar Studios, Inc.
3201 Dickerson Pike
Nashville, TN 37207
Phone 615.650.6000 ext. 6610
Cell 615.445.5616
Fax 615.650.6027
email bill.spencer at northstarstudios.tv
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