Tubes - Transmitting, Audio, Misc.

• The RF Parts Company Tubes (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 prior to shipment.

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

MFG: CHINA
SKU: 811A-RFP-MQ

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: Amperex
SKU: 4CS250H-AMP

4-500B  Transmitting Tube, Tetrode, Glass,  MFR:Triton

Limited Quantity Available, New Old Stock, Not for Export

8188/4PR400A Radial-beam Pulse Tetrode Modulator Oscillator Amplifier tube.

New Old Stock 
MFR: Eimac
SKU: 4PR400A

• 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.

• Filament: Thoriated Tungsten
• Voltage: 7.5 + 0.37 volts
• Current: 20 Amps
• Amplification Factor: 200

Used * No longer available for export
MFR: Eimac 
SKU: 3-1000Z-EI-P

Data Sheet

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.

Transmitting Tube Radial Beam Power, Tetrode, Broadcast/Industrial
New Old Stock * No longer available for export
MFR: Eimac
SKU: 4X500A
Six Month Warranty

Joint Army Navy Transmitting Tube
New Old Stock * New in Box * New In Can 
No longer available for Export
SKU: 8560AS-JAN