[ETO_Alpha] Plate voltage HIGH

[Jerry]

This is strange. I have a buck boost transformer that can be set to 226 or 
242 Volts.  ON my 89 which has the taps set for 240v, when the input 
voltage is 242, the plate voltage reads 3345 no load. I use the 226 volts 
available form the transformer I get exactly 3,000 volts.

This seems unusual to me and I an concerned the filament voltage may be too 
low.

Has anyone ever seen this kind of behavior.

In either voltage settings the amp makes rated power plus.