Haltron PCF86 miniature VHF TV frequency changer
The PCF86 is a miniature VHF TV frequency changer. It has been designed for the triode oscillator to supply 3.2 Volts peak to peak to the pentode mixer section. The PCF806 is an improved form of the PCF86. The thin glass tube envelope is 20 mm in diameter and, excluding the B9A base pins, is 48 mm tall. The PCF86 was first introduced in 1960.