[QuadList] NTSC/PAL Machines

[Don Norwood]

Hi Chris:

I'm not from across the pond, but according to the Ampex docs, there were different performance levels for the PAL machines just like they had for the NTSC machines.  The basic filter was 5.44 MHz in a performance level 1 machine.  Performance level 2 & 3 had the better Bode filter which was 6.0 MHz.  

There was also a 5 MHz Bode filter specified for use in 50 Hz systems, but it doesn't say which system.  Would that have been for SECAM? 

Don

----- Original Message ----- 
  From: Chill315 at aol.com 
  To: quadlist at quadvideotapegroup.com 
  Sent: Thursday, January 28, 2010 10:55 AM
  Subject: Re: [QuadList] NTSC/PAL Machines

  The other area that may be different is the filter in the signal system.  Pal has a much higher bandwidth so that the filters were wider than NTSC.  It may not be too much of an issue but with a 4.43 sub carrier, this could be an issue.  We need an expert from across the pond to tell us what the filter was in the signal system.
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