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4CX

4CX

The 4CX category includes a variety of high-performance power vacuum tubes. These tubes are commonly used in radio frequency applications and are known for their reliability and efficiency.

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4CX125C Eimac Ceramic Transmitting Tube Tetrode (NOS)
4CX125C Eimac Ceramic Transmitting Tube Tetrode (NOS)
Made in the USA
$34.91

In Stock

Silver coating on these tubes has tarnished due to air exposure

New Old Stock * No longer available for export
MFR: Eimac
SKU: 4CX125C

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4CX350F-NOS Eimac/GE/Amperex Transmitting Tube (NOS)
4CX350F-NOS Eimac/GE/Amperex Transmitting Tube (NOS)
Made in the USA
$199.91

Out of Stock

Transmitting Tube
New Old Stock * No longer available for export
MFR: Eimac/GE/Amperex
SKU: 4CX350F-NOS
Six Month Warranty

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4CX5000R / 8170W Eimac Radial Beam Power Tetrode (NOS)
4CX5000R / 8170W Eimac Radial Beam Power Tetrode (NOS)
Made in the USA
$1,984.90

In Stock

  • Filament: Thoriated Tungsten
  • Voltage: 7.5 volts ± 0.37 volts
  • Current at 7.5 volts:  75 Amps
  • Amplification Factor (Grid to Screen): 4.5

New Old Stock * No longer available for export
MFR: Eimac
SKU: 4CX5000R

Data Sheet

This New Old Stock (NOS) tube has been recently tested and meets all technical specifications. The Warranty period for this tube is Ninety Days from the date of purchase, for the original customer only.  Please follow the instruction insert for proper installation.

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4CX600F Eimac Transmitting Tube Tetrode (NOS)
4CX600F Eimac Transmitting Tube Tetrode (NOS)
Made in the USA
Call for Price
1-800-RFPARTS (1-800-737-2787)

In Stock

Transmitting Tube Tetrode
Special for UHF, TV, etc.
New Old Stock * No longer available for export
MFR: Eimac
SKU: 4CX600F

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4CX1500B / 8660 Eimac Radial Beam Power Tetrode (NOS/NIB)
4CX1500B / 8660 Eimac Radial Beam Power Tetrode (NOS/NIB)
Made in the USA
$1,576.90

In Stock

Cathode: Oxide Coated, Unipotential
Heating time: 3 Minutes
Heater:
   Voltage: 6 Volts Nominal
   Current: 9 Amps (minimum), 11 Amps (Maximum)

New Old Stock, New In the Box * No longer available for export
MFR: Eimac

Data Sheet

This New Old Stock (NOS) tube has been recently tested and meets all technical specifications. The Warranty period for this tube is Ninety Days from the date of purchase, for the original customer only.  Please follow the instruction insert for proper installation.

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4CX20000B Eimac Radial Beam Power Tetrode (NOS/NIB)
4CX20000B Eimac Radial Beam Power Tetrode (NOS/NIB)
Made in the USA
$5,714.90

In Stock

  • Filament: Thoriated Tungsten Mesh
  • Voltage: 10.0 volts
  • Current: 140 amperes

New Old Stock * New In Box * No longer available for export
MFR: Eimac
SKU: 4CX20000B-EI

Data Sheet

This New Old Stock (NOS) tube has been recently tested and meets all technical specifications. The Warranty period for this tube is Ninety Days from the date of purchase, for the original customer only. Please follow the instruction insert for proper installation.

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4CX250B / 7203 Eimac Ceramic Transmitting Tube (Pull)
4CX250B / 7203 Eimac Ceramic Transmitting Tube (Pull)
Made in the USA
$167.90

In Stock

This is a “Good Used Tube” or “Pull”. Some are removed from New or Reconditioned Military or Commercial Equipment. This tube receives the Full RF PARTS Testing, and is electrically similar to our NOS tube at 95%-100%. There may be some minor scratches or discoloration indicating that the tube had been in a socket.

Used * No longer available for export
MFR: Eimac
SKU: 4CX250B-EI-P

NOTE: PICTURE FOR REFERENCE ONLY. CONDITION MAY VARY 

This tube has been recently tested and meets all technical specifications. The Warranty period for this tube is Thirty Days from the date of purchase, for the original customer only.  Please follow the instruction insert for proper installation.

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4CX250B/7203 Eimac Transmitting Tube (NOS)
4CX250B/7203 Eimac Transmitting Tube (NOS)
Made in the USA
$305.91

In Stock

Eimac Transmitting Tube
New Old Stock * No longer available for export
SKU: 4CX250B-EI-NOS

This New Old Stock (NOS) tube has been recently tested and meets all technical specifications. The Warranty period for this tube is Ninety Days from the date of purchase, for the original customer only.  Please follow the instruction insert for proper installation.

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4CX3000A / 8169 Eimac Radial Beam Power Tetrode (NOS)
4CX3000A / 8169 Eimac Radial Beam Power Tetrode (NOS)
Made in the USA
$1,749.90

In Stock

  • Filament: Thoriated Tungsten
  • Voltage: 9.0 volts
  • Current: 39.5 – 43.5 Amps
  • Amplification Factor (Grid Screen): 5.5

New Old Stock * No longer available for export
MFR: Eimac
SKU: 4CX3000A

Data Sheet

This New Old Stock (NOS) tube has been recently tested and meets all technical specifications. The Warranty period for this tube is Ninety Days from the date of purchase, for the original customer only.  Please follow the instruction insert for proper installation.

 

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4CX1500B/8660 Eimac Transmitting Tube (Pull)
4CX1500B/8660 Eimac Transmitting Tube (Pull)
Made in the USA
$1,191.90

In Stock

Eimac Transmitting Tube
Used * No longer available for export
MFR: Eimac
SKU: 4CX1500B-P

Email rfq@rfparts.com for price quote

The Warranty period for this tube is Ninety Days from the date of purchase, for the original customer only. Please follow the instruction insert for proper installation.

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