[Coco] Need help with composite output for CoCo

[Jamie]

Michael Rowen <mike at ...> writes:

> 
> I agree that these circuits don't seem to be able to drive modern video inputs.
 I had the same 
experience you
> had - black screen. I had one old CRT monitor that would show 
up a very dim back on gray. I 
picked up an old CoCo 1
> with a similar circuit in place, same result. Output looks OK 
on a scope, but not powerful 
enough to display
> on a modern LCD TV. The only circuits that seem to work 
without issue are those based on a 
an MC1372. I'm sure
> there are amp designs that work, but haven't been published or 
fully reverse engineered. 
There are cheap
> devices in the $14-$30 range that will convert RF out to VGA. 
Good Luck!
> 

> 

Mike, can you point me to an example of a converter in the $14to $30 range? 
 I can't seem find anything that cheap.

Thanks!

Jamie