02-28-2013, 05:32 PM
Jerry, I see a little difference in the schematics of the 124 and 121. How can I attach a picture? Or a PDF file to show you? Worst case is I’ll take another video of the 121 PDF and the underside of the Antenna Transformer and load that tonight.
The other thing is, I still have not checked all the voltages. I’m hoping it’s just a bad tube.
Jerry, what does it mean when they say “F” to “F” when measuring the tube voltages? Does that mean the two BIG pins on the tube? Say the 78 tube for example, I see where the “P”, “K”, “SG”, “SUP” and then I see “H” and “H” for the BIG pins…are those the “F” to “F”?? On the #80 tube it shows the BIG pins are the “F” to “F” so I’m just taking a stab in the dark here.
DKin – It may have been my dad who removed it for all I know. I don’t know if anyone has ever WORKED on this thing, it’s been in a spider cocoon in my parent’s basement for at least 35 years, before that who knows…
The other thing is, I still have not checked all the voltages. I’m hoping it’s just a bad tube.
Jerry, what does it mean when they say “F” to “F” when measuring the tube voltages? Does that mean the two BIG pins on the tube? Say the 78 tube for example, I see where the “P”, “K”, “SG”, “SUP” and then I see “H” and “H” for the BIG pins…are those the “F” to “F”?? On the #80 tube it shows the BIG pins are the “F” to “F” so I’m just taking a stab in the dark here.
DKin – It may have been my dad who removed it for all I know. I don’t know if anyone has ever WORKED on this thing, it’s been in a spider cocoon in my parent’s basement for at least 35 years, before that who knows…
![[-]](https://philcoradio.com/phorum/images/bootbb/collapse.png "[-]")
