An NTSC Atari looks good on a PAL TV. How come?

[Alexandre Souza]

These are very common in Brazil. BTW, most tv chipsets made from 10-15 
years to now can decode at least pal-m/pal-g/pal-n/ntsc. Seldomly they 
can decode SECAM.

Em 07/03/2018 07:49, Peter Corlett via cctalk escreveu:
> On Wed, Mar 07, 2018 at 09:06:03PM +1300, Terry Stewart via cctalk wrote:
> [...]
>> I'm assuming it's because composite input into "relatively" modern can handle
>> NTSC and PAL? Is this a reasonable thought? The UAV is not an NTSC converter,
>> and even the inventor was surprised this worked.
> 
> PAL is the superset of analogue TV standards. If one is building a TV which
> already contains the expensive components required to decode PAL, tweaking the
> constants to also decode NTSC is cheap and economies of scale may make it
> cheaper than to make the set PAL-only.
> 
> It's been about 20 years since I last saw a nominally PAL TV which couldn't
> also decode NTSC.
> 
> .
>