[Tomcomm]

For sure all RCAs after the CTC2B up to the CTC20 had two identical chroma demodulators and two identical high level CRT grid drive circuits. The fact that the CTC4's fireworks lost all color and displayed white as the fireworks trails narrowed and extinguished suggests a limited bandwidth chroma video applied to the CRT grids compared to the full bandwidth luminance video applied to the CRT cathodes. I'm sure viewing a 20 inch screen at 20 feet, no loss of color detail would be noticed on either CTV.