HF94 = 12AU6
	Equivalent 12AU6 Similar type   With different Vf EF94 = 6AU6 LF94 = 4AU6 XF94 = 3AU6 CV number CV1961 Swedish Mil.nr. M2462-439C Tektronix part no. 154-0040-00 157-0050-00 selected pair