[Amps] 4CX1000A

[Roger Dixon]

Hi Chaps,
I recently completed my 50MHz 4CX1000A amplifier.  However the Eimac pull I
have had for a while suffers from excessive secondary emission.

The question.  I have recently obtained a NOS 4CX1000A.  However, despite
being offered as an "Eimac" NOS, both the valve and the original box are
branded General Electric.  Does anyone have any views as to the
quality/specification of a valve such as this that is non Eimac branded?

TIA
Roger - G4BVY