I found this a few years ago and felt like it would be fun to work on this. After just hearing of the companies closure, I thought it might be cool to post this project. I actually found the manual for this with the foldout.
You can see here it's pretty ancient. I would not recommend even plugging this in without replacing the caps personally. At the very least, a Variac should be used to turn it on, and the "light bulb test" would be a good idea prior to that. Phil's Old Radios has great info for the beginner working on old tube gear like this. I also recommend Just Radios for replacement caps. They have nice selection, prices and good service.
http://www.antiqueradio.org/welcome.htm
http://www.justradios.com/
Old paper caps, dust and dirt.
All new caps. The mulit-section vertical caps were the hardest to replace. You can see the 3 new electrolytic caps grouped together to the right in the background.
I had to remove the CRT to replace the cap on the Horizontal Frequency Selector. You can see that cap in the other pictures above (top left). That big multi-section cap in the back is still in the unit but disconnected, with the replacement caps mounted underneath.
Working nicely. Bright stable trace from the 1v p-p output!
Full Schematic
I posted this on my dying blog and thought maybe it would be cool to post it here. While I haven't done much with it, I've tried some FM antenna alignment. It's cool to watch it bouncing along to music though lol, very mesmerizing! Happens to be my avatar pic shaded in blue.
You can see here it's pretty ancient. I would not recommend even plugging this in without replacing the caps personally. At the very least, a Variac should be used to turn it on, and the "light bulb test" would be a good idea prior to that. Phil's Old Radios has great info for the beginner working on old tube gear like this. I also recommend Just Radios for replacement caps. They have nice selection, prices and good service.
http://www.antiqueradio.org/welcome.htm
http://www.justradios.com/
Old paper caps, dust and dirt.
All new caps. The mulit-section vertical caps were the hardest to replace. You can see the 3 new electrolytic caps grouped together to the right in the background.
I had to remove the CRT to replace the cap on the Horizontal Frequency Selector. You can see that cap in the other pictures above (top left). That big multi-section cap in the back is still in the unit but disconnected, with the replacement caps mounted underneath.
Working nicely. Bright stable trace from the 1v p-p output!
Full Schematic
I posted this on my dying blog and thought maybe it would be cool to post it here. While I haven't done much with it, I've tried some FM antenna alignment. It's cool to watch it bouncing along to music though lol, very mesmerizing! Happens to be my avatar pic shaded in blue.
