UVY-RGB converter
You can make board with slot
for edge connector - there are all required signals.
But I don't recommend it, because on edge connector video signals
are too noisy. Mutch better is to pick these signals direct from
ULA chip.
If you get problems with colors, e.g. mixed up red and
green, try with some different value of C7.
TUN - Transistor
Universal NPN. This shortage is used in German magazine
'Elektor'.
TUP - Transistor Universal PNP.
This mean that you may put on this positions any low power
standard (actual) silicon transistor, only polarity is important.
Characteristics should be about: max. current: 100mA or more,
max. voltage: 15V or more, FT: 100MHz or more.
Examples: BC337, BC327, BC548, BC558, BC182, BC212 etc.