Quote:
Originally Posted by Pete Deksnis
I will hopefully be able to sweep the video amps in the Philco TV-123 chassis (1955 design) shortly; am surprised to see the 2.5 mc figure and wonder if the TV-123 matches the CTC5. For reference, the CT-100 is eyeball flat to 3 mc where it drops quickly to zero at the chroma carrier point.
Pete
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Thanks, Pete. It appears the Philco has a similar video response. I'd be curious to know how sharp the picture looks on your set.
I have attached the Bandpass Alignment page from the CTC5 Supplemental Notes. Actually the swept video response check on the notes looks flat to about 2.5MHz and the drops to -6dB at 3MHz. The response then appears to dwindle off to a minimum at 3.58 MHz.
I suppose the concern is the picture looks too soft to me. I plan to sweep the video response of my CTC5 to see if it matches the notes. I suppose it had crossed my mind that perhaps others had noticed the soft picture and that it may be attributed to a bad delay line or perhaps bad peaking coils.