Power Pentode
The Hytron HY-69 Vacuum tube requires a 5 pin UY socket. The HY69 tube is used in KAAR PTS-22X
radio transmitters. These radios were manufactured by the Kaar Engineering Company.
Electrical Data:
Heater Voltage ................................ 6.3 V
Heater Current ................................ 1.5 A
Direct Interelectrode Capacitances (approx)
Pentode
Input ......................................... 15.4 pf
Output ........................................ 6.5 pf
Grid to Plate ................................. 0.23 pf
Maximum Ratings (Design Center Values)
Pentode
Plate Voltage ................................. 600 V
Grid No. 2 Voltage ............................ 300 V
Plate Dissipation ............................. 40 W
Grid No. 2 Dissipation ........................ 5 W
Characteristics and Typical Operation
Class C Oscillator/Amplifier
Plate Voltage ................................. 600 V
Grid No. 2 Voltage ............................ 250 V
Grid No. 1 Voltage ............................ -60 V
Grid No. 1 Current ............................ 4 mA
Plate Current ................................. 100 mA
Grid No. 2 Current ............................ 12.5 mA
Driving Power ................................. 0.25 W
Power Output (approx) ......................... 42 W
Class C Modulated Amplifier (Plate)
Plate Voltage ................................. 600 V
Grid No. 2 Voltage ............................ 250 V
Grid No. 1 Voltage ............................ -60 V
Grid No. 1 Current ............................ 5 mA
Plate Current ................................. 100 mA
Grid No. 2 Current ............................ 12.5 mA
Driving Power ................................. 0.35 W
Power Output (approx) ......................... 42 W
Class C Modulated Amplifier (Modulated Doubler)
Plate Voltage ................................. 600 V
Grid No. 2 Voltage ............................ 200 V
Grid No. 1 Voltage ............................ -300 V
Grid No. 1 Current ............................ 6 mA
Plate Current ................................. 90 mA
Grid No. 2 Current ............................ 11.5 mA
Driving Power ................................. 2.8 W
Power Output (approx) ......................... 27 W