Matched Pair FU 728F (Electron Tubes)

  • Product Code: TUB-M_P_FU 728F
  • Stock: In Stock
  • Price Ex VAT:


Matched pair of metal-ceramic transmitting power tetrodes with oxide-coated unipotential cathode indirectly heated.
Can be used in our power amplifiers OM4000A / OM4000HF and OM4001A.

Heater: 8.5-9 A at 9 V
Warm up time: min. 180 seconds
Input capacitance: 103 pF
Output capacitance: 13.3 pF
Transfer capacitance: 0.03 pF
Anode voltage: 3 kV
G1 voltage: -110 to +10 V
G2 voltage: 350 V
Anode current: max 5 A, nominal 0.9 A
Anode dissipation: 1200 W
G2 dissipation: 12 W
G1 dissipation: 0 W
Output power single-tone: 1800 W (110MHz Class AB1)
Output power two-tone: 2500 W (110MHz Class AB1)

Maximum operating temperature: 250 °C
Cooling: forced air, 3000 l/min

Dimensions of one tube
diameter: 85 mm
height: 130 mm