Quote:
Originally Posted by old_coot88
Remember that in a TV set, the IF stages are stagger-tuned rather than tuned 'on-peak' (as in a radio). Stagger tuning is for a wide bandpass which is necessary to render fine detail in the pic.
Also the signal level from the genny should be attenuated as much as possible for a stable trace.
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I remembered that the Eico 369 manual talked about stagger tuned IF and sure enough the manual talks about adjusting each IF for its own frequency. I looked on Sams schematics and sure enough, there is a frequency marked by each IF coil! However there are only 2 freq. used. Yup, the 25.3 and the 23.1. Which corresponds to the Sams alignment chart.
Hmm....still puzzled on how to actually align the video IF section.