GI-70BT Vintage Soviet Russian Military Tube EXC RARE

Main characteristics:
with Uh=12,6 V, Ua=1,3 kV, Ua имп=9 kV, Ia=150 mA,
Ia imp=7,5 A, l=9.2 cm, t =10mces, porosity 1400

current of heat 

1,925 ± 0,125  A

current of anode at start (with Ua=1,5 kV, Uс= -40 V)

£ 5 mA

current of grid back (with Ua=1,5 kV)

£ 96 mkA

emission current in pulse (with Ua=Uc=400 V)

20 A

leak current grid - catode (with Uc= -200 V) 

40 - 80  A

steepness of characteristic

23 ± 3 mA/V

transmissivity (if changed Uа to 200 V)

1,5 ± 0,3 %

Working point voltage (negative)

10 ± 2,5 V

vibrational power in pulse mode

11W

interelectrode sizes, pF:

     input

11,1 ± 1,1

     output

4,6 ± 0,4

     through passage

0,075 ± 0,02

durability

500 h

Maximal working characteristics:

voltage of heat 

12 - 13,2 V

anode voltage in mode of continuous generation

2,5 kV

anode voltage with cold cathode

3 kV

anode voltage (immediately value)

5 kV

anode voltage in pulse

9 kV

grid voltage

80 V

negative grid voltage (minimal)

400 V

grid voltage in pulse

600 V

negative grid voltage in pulse (immediately value) minimal

900 V

cathode current

0,6 A

cathode current (immediately value) with no modulation

1,25 A

anode current in pulse (constant value)

7,5 A

Power, dissipate by anode

350 W

Power, dissipate by grid

7 W

Band range in pulse mode (minimal)

11cm 

pulse length

10 mcsec 

Tempurature of anode butt

200 C

Tempurature of anode radiator

160 C

Tempurature of cathode lead-out

100 C 

Tempurature of grid lead-out

200 C

Tempurature of ceramic parts

250 C

resistance in grid circuit

10 Ohm