1pcs GU-72 (ГУ-72, GU72) USSR Generator Tetrode, Russian Tube, Valve | NOS

Description

1pcs GU-72 (ГУ-72, GU72) USSR Generator Tetrode, Russian Tube, Valve | NOS
1pcs (tube) in one lot
NOS (New Old Stock)
-
You buy what you see at the photo
Uluanovsk
Brand
DESCRIPTION:
GU-72 -
The GU-72 generator tetrode is designed to operate in the single-band power
amplification mode in the frequency range up to 10 MHz.
Cathode - indirectly heated oxide.
Execution - metal-glass.
Location of pins RSH26.
Durability - not less than 1000 hours.
Weight - no more than 320 g.
Main technical parameters of GU-72:
Filament current 0.95 ± 0.1 A
2nd grid currentno more than 40 mA
Slope characteristics 19 ± 4 mA / V
The gain of the 1st grid relative to the 2nd grid 9.5 ± 2.5
Net closing voltage negative no more than 220 V
Ready time not less than 2 minutes
Oscillatory power not less than 70 W
Interelectrode capacitances, pF:
- input no more than 37
- weekend 7.5 ± 2.5
- checkpoint no more than 0.1
Limiting operational characteristics of GU-72:
Filament voltage 22 - 27.2V
Anode voltage 1.3 kV
Anode voltage (peak value) 1.8 kV
1st grid voltage is negative 250 V
2nd grid voltage 700 V
Power dissipated by the anode 85 watts
Power dissipated by the 2nd grid 15 watts
Power dissipated by 1st grid 1 watt
Cathode current (DC) 250 mA
Cathode current (peak value) 750 mA
Working frequency 10 MHz
Cylinder temperature 250 C
Ambient operating temperature range from -60 to +50 С
DELIVERY:
Dear customers, we ship via International Airmail.
Perfect and safely shipping. Tracking number is always provided.
We use standard mail service for shipping all tubes/valves.
We ship from Ukraine.
Important note - all international mail services are currently working, so purchased items will 100% be shipped to your location!
We combine lots to save you money on delivery.
Parcels are divided into categories depending on the weight ( product + package weight).
Delivery prices:
0-250 grams - 7.9-10 $
Package weight (50 grams)
250-500 grams - 14 - 16 $
Package weight (100 grams)
500-1000 grams - 24-28 $
Package weight (200 grams)
Every next kilogram + $ 10 and + 200 grams of weight.
You will be able to choose the most favorable ratio of price, product and cost.
The price of delivery has increased significantly, but we try to almost not change the cost of delivery.
If you accidentally overpaid for delivery, we will refund your money.
If you have any questions, we are always ready to communicate and help you.
However, some delays in both Standard and Express services may happen.
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