Transmitting Tubes

Glass Transmitting Tube, Tetrode (NOS)
New Old Stock * No longer available for export
MFR: Eimac/Triton
SKU: 4-500A
Six Month Warranty

Ruggedized construction allows the 4CS250R to be operated in applications where shock and/or vibration is experienced.

The Sealed Bag was ripped and allowed air to reach the tube resulting in minor corrosion around the threaded hole. Corrosion has been removed.

New Old Stock, Not for Export
MFR: Amperex
SKU: 4CS250R

New Old Stock * No longer available for export
MFR: Eimac
SKU: 3-400Z

Note: Picture for reference only.

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.

• Filament: Thoriated Tungsten
• Voltage: 5.0 or 10.0 Volts
• Current: 25.0 or 12.5 Amps

New Old Stock * No longer available for export
MFR: Eimac
SKU: 304TL

 Data Sheet

Transmitting Tube, Tetrode, Glass Envelope
New Old Stock / New In Box * No longer available for Export
MFR: Eimac, USA
SKU: 4-400A-EI
Six Month Warranty

Tube, rectifier, eimac,nos

Filament: Thoriated Tungsten
Voltage: 7.5 Volts
Current: 100 Amps

New Old Stock * No longer available for export
MFR: Taylor Tubes
Made in China
SKU: 3CX10000A7-TAY

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.

• Filament: Thoriated Tungsten
• Voltage: 7.5
• Current: 20.0 – 22.7 Amps
• Amplification Factor: 6.1 – 7.

New Old Stock * No longer available for export
MFR: Eimac
SKU: 4-1000A-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.

• Filament: Thoriated Tungsten
• Voltage: 7.5
• Current: 20.0 – 22.7 Amps
• Amplification Factor: 6.1 – 7.7

Clean Used * No longer available for export
MFR: Eimac
SKU: 4-1000A-EI-P

Data Sheet

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.