Another local Hoffman! COLOR!

[Yamamaya42]

Mind boggled...
To me it seems that adding that gimmick just gives a faster way to wear out the green/blue guns, having a master CRT bias pot on the back tied to the cathodes of the Y-AMPS, and another on the front, on the CRT green/blue G1 that the user can set?

This is prob why it was replaced with a new one in 1973.
No telling what condition it's in now, won't know till I pick it up on Saturday.

[Electronic M]

Originally Posted by Yamamaya42

Mind boggled...
To me it seems that adding that gimmick just gives a faster way to wear out the green/blue guns, having a master CRT bias pot on the back tied to the cathodes of the Y-AMPS, and another on the front, on the CRT green/blue G1 that the user can set?

This is prob why it was replaced with a new one in 1973.
No telling what condition it's in now, won't know till I pick it up on Saturday.

It may have been the pot equivalent of the sepia switch om my old airline console. The idea was that on B&W films and TV shows older viewers that watched film before TV existed may prefer the look of sepia monochrome film stock and wish for a way that their TV could duplicate it...It looks stupid on color shows but I can see why some people might like it on monochrome shows.

[old_tv_nut]

Originally Posted by Yamamaya42

Mind boggled...
To me it seems that adding that gimmick just gives a faster way to wear out the green/blue guns, having a master CRT bias pot on the back tied to the cathodes of the Y-AMPS, and another on the front, on the CRT green/blue G1 that the user can set?

This is prob why it was replaced with a new one in 1973.
No telling what condition it's in now, won't know till I pick it up on Saturday.

The Easy Vision Cinema doesn't affect drive levels, only tracking. Not sure of the visual effect with this hookup, but probably a variation between sepia, neutral and bluish shadows.

Some Motorola sets had this third color control (they called it Tint, and called the phase control Hue, rather than Tint, as RCA and everyone else did). In the Motorolas, it was actually useful if the viewer knew how to use it (which nobody did), because the DC coupled Motorola single tube demods tracking would change depending on the mismatching of the tube sections. In the cheaper models, the control was replaced with fixed resistors, and if you replaced the demod tube, you may have needed to adjust G2s to get neutral tracking again. The early rectangular high end Magnavoxes had an automatic color switch (with a fancier name I can't recall) that reduced green-purple color saturation and set the tracking to sepia. It reduced the variation on skin tones, but gave the "tan cowboy on a brown horse riding into an orange sunset" kind of picture.