[Hallicrafters] Solid Stating an HT-37

[David Thompson]

It is true that the solid state replacements usually have slightly higher
voltage.  I use solid state 866/3B28 replacements in my old Henry 2K and the
high voltage increased just over 100 volts which is not a problem in the
amp.  Increasing the voltage can be a problem in older receivers as often
the components were maxed out or marginal at best.
The Globe Chief is a good example of the transformer being marginal and even
a slight increase can blow it!

Some of the solid state replacements so propular in the Drake and Collins
equipment did cause problems so that they came with a notice regarding using
them
in certain models.

Dave K4JRB