CTC-16 trap alignment

[DavGoodlin]

Where is the "3.58 MHz trap" referred to by the Sencore Manual? Nowhere on 736 schematic sams or in the RCA booklet is it labeled.

Is this the non-tunable LC network between the 1st and 2nd video stages?

The Sencore VA-48 and the bar sweep function allows checking of trap settings. By reducing brightness/contrast, several bars are supposed to disappear from the raster in order.

The first to extinguish should be the 3.56 mc response bar, but it remains brighter as others like 4.08mc drop out, the manual says this means the 3.58 MHz trap is not peaked.

I can confirm this because a color or BW picture has picture has horizontal streaks that cannot be removed by adjusting fine tuning but I also may be seeing 4.5mhz trap in the video stage.