03-09-2012, 11:52 PM
(03-06-2012, 10:27 PM)ipwizard Wrote:(03-06-2012, 06:04 PM)ipwizard Wrote: I found an error on the schematic I got for the 39-55. The detector/osciliator tube is labeled wrong. It lists the tube as a 6J8G when it should be a 6A8G. The tube image is correct just the label is wrong. The chassis layout shows the correct label for the tube. I found this when I was labeling the tube pins on the schematic I looked up the 6J8G and it was totally different then what was on the schematic.
Image from the schematic:
[Image: http://i1129.photobucket.com/albums/m501...-Wrong.jpg]
The 6J8G image (completely different):
[Image: http://i1129.photobucket.com/albums/m501...55/6J8.jpg]
EDIT:
I think I am wrong about the 6J8G tube. The set I'm working on has a 6J8G tube. I just don't understand why the tube layout is so different looking (see pics above)! They must be using only part of the tube? Dosen't make sence to me.
The tube connections are correct if I go by the 6A8G tube.
Can someone help me out on this please?
Normally when they use a 6J8 or a 6K8 the triode is used as the oscillator and the heptode section is used as the mixer, not sure what they did in this case. What chassis code does this set have 121, 122, etc?
Regards
Arran