2pcs 6P21S Output Beam Tetrode USSR Tubes Direct Filament, Russian Soviet Valves

Description

2pcs 6P21S Output Beam Tetrode USSR Tubes Direct Filament, Russian Soviet Valves
2pcs (tubes) in one lot
NOS (New Old Stock)
- Soviet Brand
DESCRIPTION:
The 6P21S beam tetrode is designed to generate and amplify high-frequency voltage.
It is used in the final stages of low-power transmitting devices. Can be used to amplify low frequency power.
Directly heated oxide cathode.
Works in an upright position.
Available in glass design.
Technical characteristics and electrical parameters:
Service life is not less than 500 hours.
Octal base with key. Pins 8.
Interelectrode capacities, pf
Input 8.2. Weekend 6.5. Checkpoint no more than 0.15.
Rated electrical data
Filament voltage, V 6,3
Anode voltage, in 600
Voltage on the second grid, in 200
Voltage on the first grid, in -16
Filament current, ma 750 ± 60
Current in the anode circuit, ma 36 ± 14
Current in the second grid circuit, ma 5
Slope of characteristic, ma / v 4
The output power in the generator with self-excitation at a voltage on the second grid of 200 V, a voltage on the anode of 600 V and a resistance in the circuit of the first grid of 10 kΩ, at a frequency of 80 MHz, W 28
Cathode heating time, sec 5
Maximum permissible electrical values
The highest filament voltage, in 6.6
The lowest filament voltage, in 6.0
The highest voltage at the anode, in 600
The highest voltage on the second grid, in 250
The highest power dissipated at the anode, W 18
The highest power dissipated on the second grid, W 3.5
The highest current in the target of the cathode, ma 100
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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