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

[Chris K]

Originally Posted by Penthode

200mV is way too low. I would go back and increase the RF signal applied.

What would you suggest...600mV?

[Penthode]

Originally Posted by Chris K

What would you suggest...600mV?

600mV where? I am talking about looking at the voltage at the detector, You increase the input until you see roughly 2 or 3 volts at the detector load.

[Chris K]

Originally Posted by Penthode

600mV where? I am talking about looking at the voltage at the detector, You increase the input until you see roughly 2 or 3 volts at the detector load.

Wait...now I'm confused. I thought you were talking about increasing the strength of the RF output frequencies from the 8601. There's a lot of changes to the -4.5V voltage I set with the pot if I vary the output voltage from the 8601. Should I not even monitor that -4.5V?

[Penthode]

Originally Posted by Chris K

Wait...now I'm confused. I thought you were talking about increasing the strength of the RF output frequencies from the 8601. There's a lot of changes to the -4.5V voltage I set with the pot if I vary the output voltage from the 8601. Should I not even monitor that -4.5V?

Just set as per instructions and leave it. What do you mean lot of changes?

[Chris K]

Originally Posted by Penthode

Just set as per instructions and leave it. What do you mean lot of changes?

Never mind...I'm looking for too many things I think might be potential issues with just a rudimentary understanding of what I'm doing. I went through all of the traps again and saw good min/max on the VTVM. The minimum and maximum adjustments came with real swings on the meter and not subtle ones. There are a couple of things bothering me. When I tried to peak the secondary on T-106, I didn't see a peak until the adjustment was about half an inch screwed out of the bottom. I've done this about 5-6 times on this adjustment. I've run the slug from all the way in to about an inch of threads out on the screw. Where I have it now is the only peak on this secondary throughout the entire range of possible settings. The frequency fed into the converter grid is 22.5mc for this adjustment. I understand you said these shouldn't need to be moved too much but this one did. It's more than a bit possible I moved it when I was working on this over the past 2 weeks.

Mu other concern is the stiffness on the final peaking slug on the secondary of T-102 at 22.9mc fed in. It was really stiff so I didn't push it. Maybe I will try some heat as you suggested. I have a hot air gun in my soldering station that has a variety of tips so I can direct the heat exactly where I want it.