[morzh]

I try not to touch these at all, and when I find the insulation is cracked, if it is not crumbling badly, I just put heatshrinkable tubing over.

[Edisla]

Does anyone sell new bushings for the tuner?

They look similar to renovatedradios "t01" part for Hippo radio but may not be as long. It's the closest I can find so may just have to try.

[Image: https://i.imgur.com/UnvN1y1.jpg]

[Image: https://i.imgur.com/RZcku7p.jpg]

t01
http://www.renovatedradios.com/product.php?product=313

[Ron Ramirez]

Measure the old one carefully, and compare to Ed's (Renovated Radios) measurements for T01. You can always cut off excess rubber, but you can't easily add more on...

[morzh]

There's one he sells for tuning caps for 37-116 and likes. Could just fit.

[Radioroslyn]

On my 116's I've used 2 rubber grommets from the hardware store per bolt/sleeve. One is 7/16" od and fits the hole in the chassis. the other is 5/16" od w/a 3/16 hole for the sleeve to fit thru. Cut the small grommet in half putting one half on top and the other on the bottom of the larger grommet.

[Edisla]

Does this wire even show on the schematic?

Gimmick?

[Image: https://i.imgur.com/xlXxZ0N.jpg]

[Radioroslyn]

Yup it's a gimmick cap to add a bit of osc signal into the mixer.

[Edisla]

Just for fun here is the stepping unit in action today.

I have the remote but am just now starting to work on it.

This video shows it in action triggered by my sig gen.

https://www.youtube.com/watch?v=SL5f5hAWVsQ

[Edisla]

So what is the best red jewel to get these days for the On light?

[Edisla]

So restoration is complete but I am seeing one strange thing going on.

I can fire the unit up and have it set to a known freq. When the audio comes up it seems fine but then about 2 minutes later I get a POP and then it all comes up louder.

I know I have at least one weak tube.

What would make the POP and everything come up louder at the same time?

Once it's warmed up it's fine.

THoughts?

[gregb]

More than likely one of the tubes has a slight internal short that clears as the tube gets hot.

Gregb

[Edisla]

I'll have to work on getting some replacement tubes at some point.