I would think the easiest and cheapest way is to use a plain old RF
modulator box that will put composite video on to channel 3 or 4.
I've taken apart one or two and they seem to have little more than a
few coils and small parts, a far cry from the rack mounted cable TV
modulators I just picked up(ooohh... so many trimmer caps and
coils...). I don't know a whole lot about it, but I'm slowly learning
as my interest in fast scan ATV increases... The converter box I have
goes with my TI-99, I probably have one in the box with my C-64, too.
I think you can still get them at Radio Shack. Otherwise, all you
need to do is dump the composite signal into an AM modulator and then
through a transmitter that the TV can pick up. I would guess these
small boxes having only coils just use a tuned circuit for channel 3
and the voltage from the composite signal to provide the signal. But
then I'm just guessing, I've never poked and prodded those little
boxes very much, I think I'll go do that now(when I find it,
anyhow...).
I have read a lot about the SWTPC TV Typewriter, and I
am interested
in how people modified a black and white TV for a video monitor. I
have an old black and white set that I thought would be fun to
modify for use as a video monitor. Now, granted, I don't really need
another composite monitor, I have plenty of old Apple monitors that
will do the same thing, I just thought it would be fun, since it
would be a challenge to find where to input the signal and how to do
it. I found the PDF of part of the SWTPC TV Typewriter manual on a
web site, and it explains the process, although not in great detail,
and references a circuit diagram of what needed to be added, but the
diagram is nowhere to be found. Does anyone have any instructions or
hints that they may be able to give me? Has anyone done this before?
Any advice would be appreciated.
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