UHF Medium-Mu Triode
The 6AF4 / 6DZ4 / 6AF4A is a mMiniature type used as a local oscillator in UHF
television receivers covering the frequency range of 470
to 890 MHz. Electrically, the 6AF4 is identical to the 6AF4A and 6DZ4 and differs only in envelope size.
It requires a miniature 7-contact socket.
Electrical Data:
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.225 A
Maximum Heater-Cathode Voltage:
Heater Positive with Respect to Cathode
Total DC and Peak ......................... 50 V
Heater Negative with Respect to Cathode
Total DC and Peak ......................... 50 V
Preferred Substitutes ........... 6AF4, 6AF4A, 6DZ4, 6T4
Substitutes............. 6AN4, 6DX4