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Magic eye tuning aid.
Was there ever made, a color TV with a magic eye tuning aid?
Du Mont used them in monochrome sets. |
yep, the philips K4 that was made originally for the canadian market in 1964. one of the first and almost unique roundie made in europe (about 300 made IIRC). The magic eye was placed to be seen standing up in front of the television while tuning it and almost not visible when sitting in front.
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magnavox also used a lght bulb on the side of the screen that would go bright when the tv is tuned properly
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Do you know what year that was? |
I have a very vague recollection of seeing an early Japanese manual tuned model with an eye tube... JVC first comes to mind, but Sharp or Toshiba or even Sears could be possibilities as well.
I remember thinking at the time that the "eye" looked out of place on a "modern" TV. The "blue band" (whatever it was called) at the top of the screen on some early Sony models seemed more fitting to the technology of the time. jr |
Sony Had a very Early Tuning aid in one of their 12" sets from 1970 ish, you would push and turn the fine tuning knob and these Blue Bars would be imposed onto the Screen on the left and Right sides, I had one of those and am trying to find the Model number, if I can find I will post, but it was VERY Early 12" sets, the Chasiss was similar to the KV-1210u, and had the Same CRT with a connector on the neck for Convergence
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I think mine was a KV1220U (but not 100% sure)... Typical early Sony 'tron with the channel selector knobs at the *bottom* of the control panel. Deluxe set, nice walnut enclosure, speaker on the left covered by vertical "slats". As I remember, the blue tuning bar was full width and dropped down from the top of the screen when the fine tuning knob was pressed. Sky Tune??
jr |
GE had sets with a meter in the late 60's. IIRC someone else
used a tuning bar tube with the straight bar but dont remember who. Never seen an eye or fan style used. 73 Zeno:smoke: |
i had a Panasonic 23" or 25" table model mostly tube set or all tube ( can't recall if it really was all tube ) that had the blue bars that came on the screen when you pushed in the fine tuning and the closer they got was how you were told you are tuned properly , so turn left or right till you have the bars as close as they will get , this set was junked because it needed an rf tuner tube and thats how i got it.
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Philco color roudie had one.
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I can't remember ever seeing an American color set with a magic eye. Thinking AFT pretty much eliminated the need, but possibly the very early color sets?
Would love to have a set with magic eye, fun to play with. Remember playing with one on a Telefunken short wave radio. |
Found this: http://m.youtube.com/watch?v=AeTxqeYDUNI
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Years Ago, i had a Philco-Ford 19 inch metel cabinet tabletop that had that tuning eye. i believe that it was a 1968 model.
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Didn't Westinghouse have a setup like that, with the blue bars?
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we had a philco ford roundie that had tuning bars.
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You are probably right as far as AFT (automatic fine tuning) is concerned. This system took the guesswork out of tuning a color set for the best picture; with AFT, of course, there was no further need for tuning eyes or meters (the latter used on some late-'60s models of GE color TVs). The advent of quartz-locked electronic tuning meant that all the viewer had to do was select the channel and forget it. Today's flat-screen TVs probably use this type of tuner; in fact, it wouldn't surprise me if they did, since there is no AFC switch on these sets. |
What no modern (ATSC) set has ... and all need! ... is an on-screen
spectrum analysis. Its easy to tell people how to adjust their antenna. Just say "try to get the whole thing above the bar (the bar is at say 17 dB S/N) but its far more important to get rid of dips than get it really big." I've tried this with newbies using my spectrum analyzer and they have no problems. The cost of this is zero. Its about 300 lines of computer code. One Fourier transform and the display code. |
Motorola, before Quasar, had a color tuning eye. You adjusted the fine tune, and when the light came on, you were there.
I dont know, but I think it was just a neon bulb in the color killer circuit. The bulb was irritating. When the TV station changed video sources, the light would go off, and come back on. It would often blink on and off during a B/W program. My dad put a piece of black electric tape over it. Bruce |
Eye tubes definitely have a "cool factor", but it seems odd in my mind that a person might do better looking at a one-inch diameter device as they adjust the fine tuning, rather than looking at the 21" display right next to it. :)
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I've got a Philco roundie that uses a horizontal tuning eye. I agree, that it's kind of a silly thing to have, given that you could just be looking at the picture on the CRT when tuning, but, still, it's neat. Also, I'm sure it was a good gimmick as well - it's a fairly late round set, so by that point I'm sure they were doing what they could to get them to sell.
Sadly, that particular set has a picture tube with a dead green gun, so until I can find another one it'll be just an interesting conversation piece. -Ian |
It's very difficult to get non-technical people to understand even relatively simple directions on how to tune something. Did you ever have any non-technical person correctly and completely describe the symptoms of set with a visible failure? Probably not often. The symptoms of incorrect tuning are more subtle. If people can't find the words to describe what they see, it's only slightly less difficult for them to understand a description of what to look for. The tuning eye was a great idea for the masses who could not learn to discern the correct tuning point.
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So it was about 1952 and my parents had this old floor standing console radio with a 15 inch speaker well before we owned a black and white television. I was 6 and the radio had this green pulsating thing on it. I loved playing with it. I was so fascinated by it, twisting the tuning knob back and forth, watching this green thing enlarge and shrink. Kept me entertained.
It looked kinda like this, except no hood on the top. http://home.comcast.net/~skbrothers/...dial___eye.jpg Would like to find a color set with a magic eye. |
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perhaps the canadian one did not have it. |
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Didn't some of the early 1960's Curtis Mathes sets have a TV with a tuning eye?
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