My CTC-16XL Project.

[Yamamaya42]

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Electronic M
Why not just use a .1uF cap to couple the transistor amp output to the grid?..It will block DC from changing grid bias, should couple the video just fine and RCA colors all had some form of DC restoration that negates and need for DC video coupling in the early stages of the video chain.
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old_tv_nut
If you use a coupling cap and remove L9, you will need to add a grid bias resistor (say, 100k) from G1 to ground.
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here is how it is right now,
https://imgur.com/NosUKXZ
https://imgur.com/wQj8vGR

the .1uF cap is on the amp pcb i made, the 100k resistor on the set, on the bottom of the tube.

the .1uF cap is cheap low quality, i did not think it mattered that much,
also , since it is a temp setup right now, i am using a low quality cable to to patch it over.

Would the cap be better suited on the bottom of the tube near the 100k res?
or leave it on the amp PCB and just try a better quality cap and cord?