Potential new project! Color Admiral!

[old_tv_nut]

The demods and color difference amps are very much like RCA too, except for using the 6MK8 dual pentode instead of separate X and Z demod sections.

Would have to do a detailed analysis to see if they had different color difference gains and angles than RCA.

[Yamamaya42]

Well people were blasting the "crappy Chroma demoduator" used in the "magget box" When I posted about this on FB vintage TV forum, with stuff like ," I hated the Magnavox tube sets! Chroma demoduator was crap, could not get good flesh tones."

I cant really say, but i DO like the CTC-16XL better, and this is the only and first set i have seen using a 6MK8.

[zeno]

Originally Posted by Yamamaya42

Well people were blasting the "crappy Chroma demoduator" used in the "magget box" When I posted about this on FB vintage TV forum, with stuff like ," I hated the Magnavox tube sets! Chroma demoduator was crap, could not get good flesh tones."

I cant really say, but i DO like the CTC-16XL better, and this is the only and first set i have seen using a 6MK8.

Yes they had that reputation. There is a switch we called the brownuator SW.
If on it gives gives a brown cast to the color.You have to also watch the
plate resistors to the demods. Motorolas & Sylvanias too ! Bottom line
is turn off the auto color switches, AFT is the only one to use IMHO.

To be fair Zenith did something similar. Early " Custom" series sets
( 9-181 main board ) that replaced the S3 ( 9-160) had a puky orange pix.
Then better sets came out & had a great pix. A few minutes in the
manuals gave the reason. Better sets had auto color, cheap sets did not !
Turning off the auto color gave the good pix, turning it on gave the orange
pix. So from that point on we modified every one without auto color we sold
& the pix was as good as any.
Told the Boston service rep about it & he told me "this conversation never
happened" and DONT tell Chicago !

enuf fer now
Zeno
LFOD !

[old_tv_nut]

Originally Posted by zeno

... Better sets had auto color, cheap sets did not !...
Zeno
LFOD !

Do you mean the cheap sets had no switch but had autocolor permanently on?

[zeno]

Originally Posted by old_tv_nut

Do you mean the cheap sets had no switch but had autocolor permanently on?

Exactly ! Cheap sets it was always on, better sets had a SW to turn it off.
IIRC it used a Hitachi IC & the same era Hitachis had a displeasing color palette
also. IIRC the original IC was a 221-### later was a 221-###-01
and the color problem went away.

Zeno

[Yamamaya42]

So far, knock on semi-fake wood, the Maggie has been behaving after the tube wiggle, I try it about twice a week, and so far, the loss of color sync has not come back, weird!

Dare I put the back cove on it and tempt fate! :O