The GameStation is a SNES Clone with a Sony CXA1145P Encoder: https://console5.com/techwiki/images/f/fb/CXA1145PM.pdf The Sony chip can output Composite, S-Video and RGB. The same chip is also in the Master System or Mega Drive. I've just used this guide for the RGB mod: http://www.smspower.org/masterful/rgb.html I used Luma as sync. I didn't want to build a new cable, so I've re-used the Neo Geo CD cable, because it doesn't contain any resistors or capacitors. I'm very happy with the mod. It's easy to perform and the picture is very sharp.
I did it to my Gamestation. However, I was not happy with the CXA1145 and I replaced the whole video encoder circuit with the newer CXA1645 encoder. I also removed the RF modulator and soldered a Genesis/MD 2 AV port in its place so I can use it with a scart cable from the rear.
