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Re: French Televisions

Geschreven door Ali Elam om 12. Okt 2001 00:20:35:

In reactie op: Re: French Televisions geschreven door Henk Kramer om 11. Okt 2001 22:03:49:

Thanks for the responses. The 819 line in French televisions applies only to VHF. When they introduced UHF they seem to have gone to 625 lines (it is actually quite amazing to shift between VHF and UHF and see the line structure change). And I agree about the AM sound.

But even with UHF they seem to have positive modulation -- the widest modulation produces whites (as opposed to blacks in PAL and NTSC) and synchronization peaks are near modulation bottom.

Ali Elam


>>First many thanks for the responses on my query for Dutch television labels.
>>I have two 1970s French black and white televisions. When I try to run them through the UHF antenna input, I get a very poor and reversed image: whites are black and vice versa. I believe that is because in those years French broadcasts had "positive modulation" so when I put in a negative modulated signal, the synchronization is poor and black/white is reversed.
>>Is there a fix to this? I looked in French sites for a UHF modulator, but CGV, which makes many of them, does not give any information.
>>Ali Elam, New York City
>The old French tv's worked with 819 lines,50 half frames a second,interlaced.
>Modulation is positive,sound is AM.
>Maybe it is possible to make a converter for this,in combination with a normal modulator.
>Good luck,
>Henk





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