Re: Flat-panel Apple II ???

[mjmahon@aol.com (Michael J. Mahon)]

Simon Williams wrote:

>On 30 Jan 2003 04:49:20 GMT obsbedia2@aol.com (Obsbedia2) wrote:
>
>> 
>> << I'm wondering if an LCD monitor would be prone to the same fuzziness
>> as a CRT monitor since there's no colour/mono switch on it... >>
>> 
>> ....and I'm wondering if a color-killer connector would solve the problem.
>> JaY

Almost certainly not.  Most inexpensive color monitors, of whatever
breed, only disable chroma when a burst is absent.  They do not
increase the available luminance bandwidth as the Apple Color
composite monitors do.

>That's a thought... lately I've been thinking about trying to build 
>some sort of luggable Apple //. Originally I just wanted to find a 
>lightweight monitor for my //c, but lately I've been thinking that
>A IIgs would be a good project... still the biggest hitch is finding
>a suitable (and cheapish) monitor. I've seen some 5" B/W CRT TVs for
>sale for $25, which have composite video inputs built-in, so I thought
>that would may be be an option... at least it won't cost a fortune to
>find out. But really a little flip-up colour monitor would really be
>nice...

The B&W TV has a chance of working, but, again, the video
bandwidth is likely not to exceed 4MHz, which will make 80-column
text virtually unreadable.

At least with the B&W TV it might be possible to modify the
video amplifier to improve the bandwidth.  (For example, by
removing the "sound trap" which taps off the 4.5MHz sound
subcarrier, and adding some high frequency peaking circuits.)

It's probably best to start with a monitor which was designed
to supply the 10MHz+ bandwidth required.

-michael

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