600 composite color problem

[Zac67]

Composite sucks anyway. The A600's output is PAL/NTSC specific and would have to be replaced to change standard.

The 1802 lacks RGB but does have Chroma/Luma - how about getting a cheap supervideo genlock from eBay and using that to convert RGB to SVid? Mine was 5 EUR...
Or get a 1084 or similar?

[Zac67]

Yes, with an NTSC, S-Video genlock you'd get the best picture possible out of the 1802.
Depending on the connectors of the genlock and 1802 you'll probably need a Mini DIN to 2xRCA cable/adapter.

[Zac67]

A600 differences PAL/NTSC models: quartz clock (doesn't matter usually) and modulator (different type, needs to be replaced); the Agnus is switchable (jumper or early boot menu). The PSU's input frequency doesn't matter at all (only on big box Amigas).

The genlock converts the RGB output to composite and/or s-video - the produced color encoding standard depends on the genlock alone, the Amiga's video standard does not really matter. You could even get a PAL resolution picture w/ NTSC colors (if your TV syncs down to 50 Hz).
Exactly the opposite combination is used with an 'NTSC playback' capable PAL VCR hooked to a PAL TV set; it's called 'PAL60' and works with 90% of all modern TV sets (modern: <10 years old).