12 volt heater/filament tubes Pentagrid converter, 6BE6/EK90 with a different heater
TRIODE-PENTODE TOSHIBA VACUUM TUBE 10KR8 NEW IN BOX
12 volt heater/filament tubes ECC81, 6060, B309, M8162 ,GE6201 High-mu dual triode. Commonly used as R.F. amplifier/mixer in VHF circuits.
VACUUM TUBE
