Hue Control On GE 15CL100

[benman94]

I wonder if, under real world conditions, the GE's susceptibility to noise would have even mattered?
It couldn't have performed too poorly, because GE used the circuit in the Porta-Color, which they built for just shy of an eternity...

[old_tv_nut]

Originally Posted by benman94

I wonder if, under real world conditions, the GE's susceptibility to noise would have even mattered?
It couldn't have performed too poorly, because GE used the circuit in the Porta-Color, which they built for just shy of an eternity...

It would only matter if the hue streaking noise showed up before the luminance noise was visible - not likely. It's the kind of thing that could show up in comparison of two large screen sets, but is probably not critical.

[benman94]

In the case of the 15CL100, the coarse shadow mask, coupled with the tiny screen would have made the whole issue moot.
In fact, I'm willing to bet that one would find a 15CL100 preferable in a side by side test with the CT-100. The CT-100, for all of its advantages on paper (IQ demod, the PLL local chroma oscillator, better NF in the front end, etc) has fatal flaws in HV stability and focus voltage regulation.
I noticed at the ETF museum that the technically inferior Westinghouse H840CK15 is more pleasing to watch due to the better HV and focus sections.

[miniman82]

The issues with HV stability in the CT-100 are easily solvable, I did some circuit mods to mine and it now performs as well as any later roundie.

[benman94]

If you feel like hot-rodding a set, then sure, more power to you. I prefer to restore my sets to the circuitry it left the factory with. A stock CT-100 is a dog.

[dieseljeep]

Originally Posted by benman94

I wonder if, under real world conditions, the GE's susceptibility to noise would have even mattered?
It couldn't have performed too poorly, because GE used the circuit in the Porta-Color, which they built for just shy of an eternity...

If you look into any of the GE designed color sets, you'll find some form of the chrystal-ringer type color circuit. The CB types, KC,KD,KE etc.

[old_coot88]

Originally Posted by dieseljeep

If you look into any of the GE designed color sets, you'll find some form of the chrystal-ringer type color circuit. The CB types, KC,KD,KE etc.

One iteration even uses a NE-2 neon bulb in the burst gate circuit. We had one in the shop with no color sync. Replacing the neon bulb cured it, even tho the original bulb was lighting normally.

GE was not our house brand, but we did service quite a few of them. But dang if I can remember one not having a user-accessable tint control of some kind. Lack of a tint control woulda certainly been noteworthy.

[dieseljeep]

Originally Posted by old_coot88

One iteration even uses a NE-2 neon bulb in the burst gate circuit. We had one in the shop with no color sync. Replacing the neon bulb cured it, even tho the original bulb was lighting normally.

GE was not our house brand, but we did service quite a few of them. But dang if I can remember one not having a user-accessable tint control of some kind. Lack of a tint control woulda certainly been noteworthy.

I remember seeing one model that used a compression trimmer with a shaft on it as the tint control.