Name: Vacuum electron tube FU-74F Ceramic transmitting power tetrode, equivalent to Russia ГУ-74Б, GU-74B, GU74B and USA 4CX800A for RF applifiers
Brand: China industrial electronic components
SKU: ETT02031
Price: 785.95 USD
Availability: InStock

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Price:

$785.95

~~$994.59~~

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Description
Reviews

Matched pair service at higher price availaible upon request,
One year warranty offered for the tube.

The FU-74F is a metal ceramic tetrode, with a side heated oxide cathode, forced air cooling, and a maximum operating frequency of 250 MHz, mainly used for radio transmission equipment to amplify 60 MHz single sideband signals.
It is equivalent to Russia ГУ-74Б, GU-74B and USA 4CX800A, could replace each other in application.

General characteristics
Filament voltage...................................................... 12.6V
Filament current........................................... 3.6A
Transconductance................................... 32.5mA / V
Interelectrode capacitance（cathode grounding）
input................................................. 51pF
output.............................................. 11pF
cross.............................................. 0.09pF
Frequency max................................... 250MHz
Mounting................................................. any
Cooling............................................. Force air
Cooling air volume min.................. 35m³/h
Temp.@ anode shell & sealing point max.
................................................................... 250℃
Height max............................................... 90mm
Diameter max........................................... 72mm
Net weight approx.............................. 460g

MAXIMUM RATING
Heating voltage.............................. 11.9～13.3V
Heating current.............................. 3.3～3.9 A
CW anode voltage................................ 2kV
Pulse anode voltage............................. 4kV
Control grid voltage.................................. -150V
Screen grid voltage................................... 300 V
CW cathode current.................................. 0.75A
Cathode current...................................... 2.5A
Dissipation of anode................................ 600W
Dissipation of screen grid....................... 15W
Dissipation of control grid...................... 2W
Frequency................................................... 250MHz

TYPICAL OPERATING
(Grid-driven, single channel)
Frequency................................................. 60MHz
Output power............................................ 750W
Anode DC voltage.................................... 2.2kV
Screen grid voltage................................ 350V
Bias voltage...................................... 47V
No signal anode current.................. 360mA
Anode DC current............................ 630mA
Screen grid DC current.................... 30mA

For delivery time:
Generally, we will dispatch the items within 8 days upon order confirmation; some items may need 30~60 days to get ready for delivery, then we will try our best to dispatch as soon as possible, or we will contact you and offer advice.

For Bulk order:
If you would like to place a bulk order, please contact us for better price and better delivery cost.