Ok. Let’s try this again…RCA 9TC240 Alignment

[Penthode]

The first thing I see is the sweep is set to full. That is the full bandwidth from 1.0MHz to 110MHz when the range is set to 110. To sweep across the center frequency indicated in the read out. Refer to page 3-2 in the manual.

Nest set the Sym Sweep with to 1.0MHz for aligning the sound IF and discriminator and fully clockwise to to the Video IF alignment.

Set the dial indicator to 21.25MHz to do the sound alignment and about 44MHz to do the Video IF alignment.

I generally use line truggering (lower left). On the 8600a the center button depressed for scope is correct for the sweep alignment. You press the CW when the generator is in CW to generate and measure the frequency of a fixed CW signal.

The scope I cannot see the settings but as Banderson indicated it must be in X-Y mode.