Tubes - Transmitting, Audio, Misc.

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.

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.

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.

The 4CX10000D is useful as an oscillator, amplifier, or modulator at frequencies up to 110 megahertz and is particularly suited for use as a linear RF amplifier or class-AB audio amplifier.

Data Sheet

Rebuilt * No longer available for export
MFR: RF Parts Company
SKU: 4CX10000D-RFPR

This 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.

• Filament: Thoriated Tungsten 
• Voltage: 6.3 ± 0.3 Volts
• Current @ 6.3 volts: 160 Amps

Rebuilt * No longer available for export
MFR: Eimac
SKU: 4CX15000A-RFPR

Data Sheet

This Rebuilt 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.

This tube is an improved version of the 4CX250B, with slightly higher average gain. This tube has been tested, and is electrically similar to a 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: YC-136-P

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.

4CX350FJ-8904 JAN Amperex Transmitting Tube (NOS/NIB)

The 4CX350FJ / 8904 is intended for Class AB linear RF amplifier service. The tube has rugged internal construction features. The 4CX350FJ/8904 may be used as an exact replacement for the 4CX350F/8322 in most linear applications, requiring only minor circuit adjustment and retuning. The tube has improved intermodulation distortion characteristics. It contains a 26.5 volt heater, and is recommended for new equipment designs.
New old stock * No longer available for export.
Limited 90 Day Warranty.
NSN 5960-00-369-7460
MFR: Amperex, USA

• Filament: Thoriated-tungsten mesh
• Voltage:  6.5 ± 0.3 Volts
• Current @ 6.5V: 105 Amps

New Old Stock * No longer available for export
MFR: R F Parts Company
SKU: 4CX12000A-RFP-REBUILD

This 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.

The 8171 / 4CX10000D is useful as an oscillator, amplifier, or modulator at frequencies up to 110 megahertz and is particularly suited for use as a linear RF amplifier or class-AB audio amplifier.

Data Sheet

Clean Used * No longer available for export
MFR: Eimac
SKU: 4CX10000D-P