The 19" looks like an C-1 IIRC. Its 99% tubes. The SS porta color
was JA or QA chassis. One was also used in a 19". Both were short lived.
They also had a 16" that used its own chassis. It was a real dog. Tubes.
Never saw one that ran right.
Next steps were modular chassi for 13" & up. Latter a one board chassis
AA, AB, & AC. Used in 10, 13, & 17" sets.
GE was improving slowly. One more total POS 19" chassis the EC. Then
the rest were good as any. And just like Admiral when they got it down right
they soon stopped production.
73 Zeno
LFOD !