Transmitting Tubes

Eimac/CPI Transmitting Tube
Long Life version of 4CX350A
Used * No longer available for export
MFR: Eimac/CPI
SKU: 4CX350AC-EI-P

The JAN-8321A is a compact Air-Cooled Tetrode built for military use.

New Old Stock * New In Box * No longer available for export
MFR: Eimac
SKU: Jan-8321A

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 4CX1000A/8168 is a ceramic and metal, forced-air cooled, radial-beam tetrode, with a rated maximum plate dissipation of 1000 watts. 

• Cathode: Oxide Coated, Unipotenial
• Heater Voltage: 6.0 ±0.3 Volts
• Heater Current at 6 Volts: 9.0 Amps

Data Sheet

Clean Used * No longer available for export
MFR: Eimac
SKU: 4CX1000A-EI-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.

• Filament: Thoriated Tungsten
• Voltage: 5.0 ± 0.25 Volts
• Current, at 5.0 Volts: 40 Amps

New Old Stock * No longer available for export
MFR: Penta Labs
SKU: 5CX1500A-PENTA

Rebuilt using a Svetlana core.
Filament: Thoriated tungsten
Voltage: 5.0 ± 0.25 Volts
Current, at 5.0 volts: 38.5 Amps

Rebuilt * No longer available for export
MFR: ZONUM INDUSTRIES

Data Sheet

• 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, 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
SKU: 811A-RFP-M3

This tube was rebuilt by Econco on an Eimac core.

Used Rebuilt * No longer available for export
MFR: Econco
SKU: 5CX1500B-P