EH Scott Radio Enthusiasts

The Fine Things are Always Hand Made

Comment by Kent King on October 19, 2017 at 9:42pm

So...I'm working on an AW23 tuner, probably an early 5 knob converted at the factory to a 7 knob. This lug near the oscillator has solder on it but nothing connected. Any thoughts on what might have been there prior to the revisions? Anyone have an early 23 to see? 

Comment by Norman S Braithwaite on October 19, 2017 at 11:45pm
Yes, a wire to the cathode terminal of the 76 oscillator tube. The ground return was replaced with the lug and machine screw located immediately adjacent to the cathode lug to improve oscillator operation or in some cases make the oscillator work properly.
Norman
Comment by Kent King on October 20, 2017 at 9:13am

Ah...makes sense, we've known about ground issues around the oscillator for a long time. Shortening the lead would probably improve the higher frequencies. I plan to document this restoration as a guide to others, since the AW23 is the most common Scott chassis found. This one is going to clean up nicely and go in my Roslyn Grande.

Comment by Jon Ketron on October 20, 2017 at 10:59am

Kent hope you do decide to document this restoration as a guide.  Will be most interested in following along.

Comment by Joseph W Strickland on October 20, 2017 at 3:45pm

Kent;

Is that the improved ground just to the left of the boxed ground? Looks like a machine screw and a solder lug with internal star teeth was used there.

Joe

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