Tube tester transformers are very time consuming to rewind. I try to shy away from doing them as the expense
is greater than the value of the tube tester. In some cases the customer has expressed that they would like to have them done
at any expense. So, we will now offer to rewind Hickok tube tester transformers at time and materials. Just to give you an
idea, the last 539C power and filament transformers cost the customer $1100.00 to rewind for the pair.