• The G0MJW Valve Pages 
  • The 7213 & DOD006
    • A nice valve for the serious QRO VHF/UHF amplifier. The anode dissipation is 1500W. You can put them into 2kW output service at HF. They are tetrodes and as such require a screen supply. They are best operated in grounded screen - which means the grid and heater supply sits at -500V. Many designs in Dubus etc have produced over 1kW output on 70cms. They are rumoured to work on 23cms.

    The 7214 is the pulse rated variant with 5kV anode voltage and 1kV screen voltage ratings - probably just a high spec 7213.
  • Specifications (Rather limited)
  • Heater                 5.5 V at 17.4 A
  • Cin                    42 pf
  • Cout                   0.017 pf
  • Cgp                    0.17 pf
  • Anode Dissipation      1500 W
  • Maximum Anode Voltage  3000 V
  • Anode Current          1000 mA
  • Screen Dissipation     35 W
  • Grid Dissipation       30 W
  • Maximum Screen Voltage 500 V
  • Full Frequency         1215 MHz


    • © G0MJW
    Last Modified 21st October 1998