[HooiserScootrer]

Good morning,

I'm new to the Phorum but expect to visit often, hopefully more to improve my knowledge than plea for help.

I completed the electronic restoration of a model 87 and it plays wonderfully.  The only thing that has me scratching my head are the grid voltages on the #26 RF tubes and the 45 output tubes.  Rider's calls for 6 volts on the RF tube grids and 45 on the 45 tube grids. I believe they are all mislabeled as positive rather than negative voltages but that's not the issue. My issue is that I measure 0 volts on all the grids.  I'm measuring from chassis ground. The plate voltages are within range of the schematic.

The radio performs perfectly so I don't think I have a problem but why am I not getting negative voltages at the grids?  The only issue this radio had was an open field coil which I had rewound by the gentlemen at the Alabama Historical Radio Society. They do great work. Oh, it also had sprung tuning cables. That was a joy to fix. Finally decided to give up on the cables and use fishing leaders. 

Thanks in advance for any help on my voltage conundrum.

Scott