GU-34B / GU34B TETRODE TUBE NOS IN BOX HAM RADIO 1000W Military USSR Lot 1pc.

Description

lot  1 pc
. or more
GU-34B / GU34B TETRODE TUBE
Military acceptance stamp
"
rhomb
"
Stamp of technical control department of the manufacturer
"
ОТК
"
Quality GU-34B tetrode is used for wideband power amplification at frequencies up to 250 MHz in RF equipment
Cathode: indirectly heated, oxide-coated.
Envelope: glass-to-metal.
Cooling: forced air.
Height: at most 125 mm.
Diameter: at most 94 mm.
Mass: at most 1 kg.
OPERATING ENVIRONMENTAL CONDITIONS
Ambient temperature, °C           -10 to + 55
Relative humidity at up to +25°C, %      98
BASIC DATA
Electrical Parameters
Heater voltage, V            12.6
Heater current, A            3.3-4
Mutual conductance (at anode voltage 1 kV, grid 2 voltage 500 V, anode current 500 mA), mA/V         22-34
Gain coefficient (grid 1 -grid 2, at anode voltage 1 kV, grid 2 voltage 400-500 V, anode current 500 mA)          19
Cutoff voltage (at anode voltage 1 kV, grid 2 voltage 500 V, anode current 5 mA), V, at most   80
Interelectrode capacitance, pF:
input, at most  63-73
output, at most               7-11
transfer, at most            0.12
Warm up time, min, at most      2.5
Output power, W, at least           400
Output power over 1.500 h of service, W, at least            320
Limit Operating Values
Heater voltage, V            13.9
Anode voltage, kV           4-103
Grid 2 voltage, V              600
Cathode current (DC component), mA 540
Dissipation, W:
anode  500
grid 2    20
grid 1    5
Frequency, MHz               250
Temperature at anode, stem and seals, °C       150
Robust packaging, protection against shock and
vibration
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