[QuadList] TV Standards

[Chill315 at aol.com]

There were a number of color systems proposed.  The US went to NTSC  first. 
 Then the Europeans developed two competing 625 systems,  PAL  and SECAM.  
These were both competing with 4.43 MHz NTSC that was being  pushed by RCA 
and others.  There are issues with all color systems.   the editing was a 
difficult thing when you had a four field color frame in NTSC  and an 8 field 
color frame in PAL.  
 
Now after the Europeans had a split decision (based more on politics in my  
opinion,) then the rest of the world followed with their choices.
 
Brazil was the odd ball.  They went with a PAL system for 525 lines  called 
PAL-M.  It had to be difficult for manufactures to come up with an  odd 
ball piece of equipment for one market only.  As an example. AMPEX made  an 
AVR-2 for PAL-M.  The engineering cost of this could only be spread over  a 
small number of machines.  
 
Chris Hill
WA8IGN
 
 
In a message dated 4/30/2012 7:50:39 P.M. Eastern Daylight Time,  
DennyD1 at verizon.net writes:


On Apr 30, 2012, at 7:53 AM, John  wrote:

> We never used the heterodyne process here in Aus as far as  I know,  
but I was looking through the tender documents for our first  VR1100  
and at one point it was stated that the machine must be  capable of  
being "modified to record and play back an NTSC signal  recorded at 625  
lines". Of course this was when PAL was still in the  Lab. Does anyone  
know if any work was done running NTSC  on  625?

I offer:

What  you're describing sounds an awful lot like the Brazilian color  
TV  standard, a unique version of NTSC.

Dennis Degan, Video Editor-Consultant-Knowledge Bank
NBC Today Show, New York





Please trim posts to relevant  info when replying.

Change subject to reflect thread direction.  Thanks.
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