New to the forum and restoring an SX-71. I'm trying to go through the alignment procedure in the manual.

I'm stuck at Step 2 adjusting the IF coil associated with the 455 kHz crystal (adjusting tank U, aka T9 bottom).

I've watched some YouTubes on the topic, and most I've seen use a sweep generator and spectrum analyzer instead of the legacy Step 2 procedure.

I have an IFR 1200A but it doesn't have a sweep generator, so I attempted to do my adjustment per the manual. I've set the controls per the Step 2 instructions. Per my IFR 1200A the crystal seems to be at 457.9 kHz, so that is what I'm generating with my IFR.

I was able to adjust tank U for a peak, but then I tried to look for dip & second peak on either side of the main peak, and couldn't seem to find it (I understand the adjustment goal is mid-way between the main peak and the dip). At the main peak, adjusting the frequency +/- 100 Hz resulted in 40 dB drop.

Subsequently, I tried to adjust again for the former peak, but this time the best peak I could get was about???of what I had before, and when 100 Hz off center freq, the drop is far less dramatic.

I fear that I dislodged the ferrite slug from the adjustment screw by going too far one way or the other.

Any ideas?

Thanks,

Randy, W7HMT