TUBE 4-1000A / 8166

GENERAL DESCRIPTION


photo 4-1000A The 4-1000A is intended for use as an amplifier, oscillator, or modulator and is capable of efficient operation well into the VHF range.
Cooling of the tube is accomplished by radiation from the plate and by circulation of forced-air through the base and around the envelope. Cooling can be simplified through the use of a SK-510 Air-System Socket and its accompanying glass chimney.


TECHNICAL SPECIFICATIONS
Plate Dissipation (Max.) 1000 watts
Screen Dissipation (Max.) 75 watts
Grid Dissipation (Max.) 25 watts
Frequency for Max. Ratings (CW) 110 MHz
Cooling Radiation & Forced Air
Filament
Voltage
Current
Thoriated Tungsten
7.5 volts
21.3 amperes
Capacitances (Gnd. Cath. Connection)
Input
Output
Feed-through

28.1 pF
8.1 pF
0.3 pF
Amplification Factor (g1-g2) 6.9
Transconductance 10,000 µmhos
Base 5-Pin Special
Recommended Air-System Socket SK-510
Recommended Air Chimney SK-506
Recommended Heat Dissipating Connector HR-8
Maximum Seal Temperature 200°C
Maximum Envelope Temperature 225°C
Maximum Length 9.63 in; 244.60 mm
Maximum Diameter 5.25 in; 133.30 mm
Weight (approximate) 1.5 lb; 0.68 kg
Operating Position Vertical, base up or down
Specifications may change without notice

THIS TUBE IS USED IN THE FOLLOWING SHORTWAVE BROADCAST TRANSMITTERS
Manufacturer Transmitter specifications Power in kW
Continental Electronics 420 A 500
Gates HF-1 M 1


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



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