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Article #22123

Re: NTSC <-> PAL

#22123
From: Tim Kehres
Date: Thu, 01 Feb 1990 02:03
78 lines
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In article <1679@milton.acs.washington.edu> pingpong@milton.acs.washington.edu (jimmy) writes:
> How difficult is it to build a NTSC <-> PAL device? (Any commercially
> available ones?)
> (I have a PAL VCR and a NTSC TV.)
> Or would it be cheaper to buy a PAL TV?

I'm not sure about building the NTSC <-> PAL converter, but I would not
think it woule be trivial.  If someone knows of such a device, I would
also be interested, especially if it operates on 50/60 Hz.

When I was in Japan earlier in the year, I noticed many of the newer VCR's
that supported NTSC, PAL and SECAM.  While in Germany a few months back,
I saw many televisions that supported all three formats, but not many 
VCR's.  I have not seen much of either in the United States.

In case you are interested, I had compiled a listing (from the '89 WRTH)
of many of the different broadcast formats:

Country Name	Country Code	Power	   Primary Language	TV System
============	============	======	   ================	=========
China  (PRC)         86         220/50     Putonghua,Amoy       D/PAL
China  (Taiwan)      886        110/60     Chinese (Mandarin)   M/NTSC
Hong Kong            852        200/50     Chinese,English      I/PAL
Indonesia            62         127/50     Indonesian           B/PAL
Japan                81         VAR/VAR    Japanese             M/NTSC
Korea (South)        82         100/60     Korean               M/NTSC
Malaysia             60         240/50     Bahasa Malaysia      B/PAL
Philippines          63         220/60     Philippine dialects  M/NTSC
Singapore            65         230/50     Malay,Chinese,Tamil  B/PAL
Sri Lanka            94         230/50     Sinhala,Tamil        B/PAL
Thailand             66         220/50     Thai                 BM/PAL
Austria              43         220/50     German               BG/PAL
Belgium              32         220/50     Dutch,French,German  BH/PAL
Czechoslovakia       42         ???/50     Czech, Slovak        DK/SECAM
Denmark              45         220/50     Danish               B/PAL
France               33         220/50     French               L/SECAM
Germany (West)       49         220/50     German               BG/PAL
Germany (East)       37         ???/??     German               BG/SECAM
Hungary              36         ???/50     Hungarian            DK/SECAM
Italy                39         VAR/50     Italian              BG/PAL
Luxembourg           352        110/50     Luxembourgian        BLG/PAL&SECAM
Netherlands          31         220/50     Dutch                BG/PAL
Spain                34         127/50     Spanish              BG/PAL
Switzerland          41         220/??     German,French        BG/PAL
United Kingdom       44         240/50     English              I/PAL
USSR                 7          127/50     Russian              DK/SECAM
Canada               1          115/60     English,French       M/NTSC
Mexico               52         110/60     Spanish              M/NTSC
United States	     1          110/60     English		M/NTSC

Television System Codes
-----------------------
System	#Lines	 Channel  Vision    Vision/	Vestigal   Vision     Sound
                 Width    Bandwidth Sound 	side-band  Modulation Modulation
	         MHz	  MHz       separation  MHz
				    Mhz
------  ------   -------  ------    -------     --------   ------     -----
  A     405        5       3         -3.5        0.75       Pos        AM
  B     625        7       5         +5.5        0.75       Neg        FM
  C     625        7       5         +5.5        0.75       Pos        AM
  D     625        8       6         +6.5        0.75       Neg        FM
  G     625        8       5         +5.5        0.75       Neg        FM
  H     625        8       5         +5.5        1.25       Neg        FM
  I     625        8       5.5       +6          1.25       Neg        FM
  K     625        8       6         +6.5        0.75       Neg        FM
  K'    625        8       6         +6.5        1.25       Neg        FM
  L     625        8       6         +6.5        1.25       Pos        AM
  M     525        6       4.2       +4.5        0.75       Neg        FM
  N     625        6       4.2       +4.5        0.75       Neg        FM

The sound carrier frequency for each channel can be determined by adding the
appropriate figure to the vision carrier frequency given above (5.5 MHz for 
systems G, H; 6 MHz for system I and 6.5 MHz for systems K, L).  In West
Germany ch38 is reserved for aero-navigation.

Regards,

Tim Kehres
Technical Details
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From: kehres@lance.tis.llnl.gov (Tim Kehres)
Newsgroups: sci.electronics
Subject: Re: NTSC <-> PAL
Message-ID: <695@ncis.tis.llnl.gov>
Date: 1 Feb 90 02:03:18 GMT
References: <1679@milton.acs.washington.edu>
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