Admiral 14R12 Restoration

[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 while maintaining a stable trace.

[Crist Rigott]

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.

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.