Transmitting Tubes

• 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.

For use as an amplifier, oscillator, or modulator.

• Filament: Thoriated Tungsten
• Voltage: 5V
• Current: 6.5Amp
• Maximum plate-dissipation 125 Watt
• Maximum plate-voltage 3000V (3KV) at frequencies up to 120 Mc
• Base: 5 pin metal shell

New Old Stock * No longer available for export
MFR: Eimac
SKU: 4-125A

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

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

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.

• The RF Parts Company (SELECT) 811A is the best quality 811a tube in current production.
• Usage tests show it to be equal to the much-respected RCA, 811A and Svetlana, 811A.
• Base indexed and internal structure aligned and supported for both horizontal and vertical operation.
• Ideal for the Collins 30L1 and similar equipment where tubes mount horizontal.
• Each RF Parts Company Select tube is tested by RF Parts prior to shipment.

Six Month Limited Warranty against manufacturing defects and workmanship. Sockets in image sold seperately.

MFR: CHINA
SKU:811A-RFP-MP

• The RF Parts Company SELECT 811A is the best quality 811A tube in current production.
• Usage tests show it to be equal to the much-respected RCA and Svetlana 811A.
• Base indexed and internal structure aligned and supported for both horizontal and vertical operation.
• Ideal for the Collins 30L1 and similar equipment where tubes mount horizontally.
• Each tube is tested at our San Marcos, CA USA facility, prior to shipment.

Six Month Limited Warranty against manufacturing defects and workmanship.

MFG: China

• The RF Parts Company SELECT 811A is the best quality 811A tube in current production.
• Usage tests show it to be equal to the much-respected RCA and Svetlana 811A.
• Base indexed and internal structure aligned and supported for both horizontal and vertical operation.
• Ideal for the Collins 30L1 and similar equipment where tubes mount horizontally.
• Each tube is tested at our San Marcos, CA USA facility, prior to shipment.

Six Month Limited Warranty against manufacturing defects and workmanship.

MFG: China
SKU: 811A-RFP-M3