Transmitting Tubes

Designed to function as an af power amplifier and modulator, a linear RF power amplifier, and a class C power amplifier and oscillator.

New Old Stock, New In Box * No longer available for export
MFR:GE, RCA, Motorola
SKU: 6883B

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.

Designed to function as a power amplifier tube in radio amplifiers and transceivers.
New old stock * New In Box * No longer available for export.
MFR Date: 11/1943
MFR: National Union Radio Corporation
SKU: 1625-NU

• Rebuilt on an Eimac core
• Filament: Thoriated Tungsten
• Voltage: 7.5 + 0.37 Volts
• Current, at 7.5 volts:  50 Amps

Rebuilt * No longer available for export
MFR: Econco
SKU: 3CX2500H3-EC

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.

• Filament: Thoriated Tungsten
• Voltage: 7.5
• Current: 21 Amps
• Amplification Factor: 7

New Old Stock * No longer available for export
MFR: Triton

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.

New Old Stock * No longer available for export
MFR: Genertal Electric - Made in Canada
SKU: 807-GE-CAN

Amperex Transmitting Tube, Broadcast/Industrial
New Old Stock * No longer available for export
MFR: Amperex
SKU: 4CX250R-AMP-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.

The GU74B / 4CX800A Ceramic Power Tetrodes are high-performance ceramic / metal tetrodes with a plate dissipation rating of 800 watts. The performance characteristics of the 4CX800A allow its use as a high gain grid-driven RF amplifier or as used in grounded grid service.

NOTE: All tubes have been Gain tested at 2000v, 300ma

Low Hour Pull * No longer available for export
MFR: Svetlana
Made in Russia
SKU: GU74B-LHP

Designed to operate as a transmitting tube up to 500MC
New Old Stock * No longer available for export
Limited 90 Day Warranty
MFR: Amperex
SKU: 5894