TUBE 4CX15,000A / 8281

GENERAL DESCRIPTION


photo 4CX15,000A The 4CX15,000A is intended for use in audio or radio frequency applications. It features a new type of internal mechanical structure which results in higher RF operating efficiency. Low RF losses in this mechanical structure permit operation of the 4CX15,000A at full ratings up to 110 MHz, and at reduced ratings, to 225 MHz.
The 4CX15,000R is identical to the 4CX15,000A except that is has a mesh filament. It is recommended for VHF TV linear amplifier service to 225 MHz.


TECHNICAL SPECIFICATIONS
Plate Dissipation (Max.) 15,000 watts
Screen Dissipation (Max.) 450 watts
Grid Dissipation (Max.) 200 watts
Frequency for Max. Ratings (CW) 110 MHz
Cooling Forced Air
Filament
Voltage
Current
Thoriated Tungsten
6.3 volts
160 amperes
Capacitances (Grounded Cath. Connection)
Input
Output
Feed-through

160.5 pF
24.5 pF
1.5 pF
Capacitances (Grounded Grid Connection)
Input
Output
Feed-through

67.0 pF
25.5 pF
0.2 pF
Amplification Factor (g1-g2) 4.5
Base Special, Coaxial
Recommended Air-System Socket SK-300A
Recommended Air Chimney SK-316
Maximum Seal & Anode Core Temperature 250°C
Maximum Length 9.38 in; 238.00 mm
Maximum Diameter 7.58 in; 193.00 mm
Weight (approximate) 12.8 lb; 5.80 kg
Operating Position Vertical
Specifications may change without notice

THIS TUBE IS USED IN THE FOLLOWING SHORTWAVE BROADCAST TRANSMITTERS
Manufacturer Transmitter specifications Power in kW
CCA Electronics AM 10,000F 10
AM 15,000F 15
AM 50,000D 15
Continental Electronics 416 D 10
417 D 50
Elcor SW-40 K 40
SW-50 K 50
Energy-Onix HF-10K2 10
Gates HC-114 250
NEC Corporation HFB-7840 10
RIZ-Transmitters OR 10 K-06 10


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





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