TUBE 8122

GENERAL DESCRIPTION


photo 8122 The 8122 is a very small, low-cost, forced-air-cooled beam power tetrode designed for use as an RF power amplifier, oscillator, regulator, distributed amplifier, or linear amplifier in mobile or fixed equipment.
The terminal arrangement of the 8122 facilitates use of the tube with tank circuits of the coaxial or strip-line type. Effective isolation of the output circuit from the input circuit is provided at the higher frequencies by the low-inductance ring termination for grid-2. A base-pin termination for grid-2 is also available for operation of the 8122 at the lower frequencies.


TECHNICAL SPECIFICATIONS
ELECTRICAL
Frequency (Max.) 500 MHz
Heater
Voltage
Current

13.5 V
1.3 A
Mu-Factor (G1 to G2) 12
Capacitance
G1-K
G2-P

16.3 pF
7.0 pF
MECHANICAL
Cooling Forced Air
Max. Length 57.4 mm (2.26 in)
Max. Diameter 41.7 mm (1.64 in)
Weight 99 g (3.5 oz)
Operating Position Any
MAXIMUM RATINGS
Anode Dissipation 400 W
Grid-2 Dissipation 8 W
RF AMPLIFIER - CLASS B TELEGRAPHY SERVICE - TYPICAL OPERATION
Anode Voltage 2.0 kV
Grid-2 Voltage 250 V
Anode Current 300 mA
Drive Power 8 W
Power Output 300 W
Frequency 470 MHz
Specifications may change without notice

THIS TUBE IS USED IN THE FOLLOWING SHORTWAVE BROADCAST TRANSMITTERS
Manufacturer Transmitter specifications Power in kW
Gates HC-114 250


THIS TUBE IS AVAILABLE FROM
Manufacturer Rebuilder Distributor
Penta Laboratories
Richardson Electronics





PRICE LEVEL (US$)
1 2 3 4 5 6
0 - 10 10 - 100 100 - 1000 1000 - 10,000 10,000 - 50,000 50,000 - 100,000