Tubes - Transmitting, Audio, Misc.
Please choose from the following TUBES Sub-Catagory choices:
572B![]() |
811A![]() |
6146![]() |
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4CX350 Series![]() |
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SOCKETS![]() |
CHIMNEYS![]() |
PLATE CAPS![]() |
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BOOKS![]() |
BASES![]() |
PARASITIC SUPPRESSOR![]() |

SK-2200 Eimac Tube Socket for 3CX1500A7/8877 (Used)
In Stock
Eimac Tube Socket for 3CX1500A7/8877
Removed from new assemblies
Used * No longer available for export
MFR: Eimac
SKU: SK2200-P

Y-254A Eimac Tube Socket Mounting Plate, Anode Clamp, and Chimney (Used)
In Stock
Designed to be used with the 4CX1000A and 4CX1500B tubes
Includes socket, mounting plate, chimney and the anode clamp bracket.
Used * No longer available for export
MFR: Eimac
SKU: Y-254A-WB

SK300A Eimac Air System Tube Socket for 4CX3500A or 4CX5000A Tubes (Pull)
In Stock
Removed from working equipment. Has original circuitry attached as well as two large cable leads coming from the base of the circuit.
The socket has one tooth missing from the top ring.
Used
MFR: Eimac
SKU: SK300A-PWC
NOTE: Picture is the part you will be receiving.

001839 Eimac Control Grid Collet for SK-300 Socket (Pull)
In Stock
This is the collet that fits on the outside of 001837 & 001838 Collects on SK300A Eimac tube socket. Size: 3.8" Inside Diameter
Comes with the spring ring. Missing two teeth on the ring.
Used
MFR: Eimac
SKU: 001839-P

001838 Eimac Middle Filament Collet for SK300 Socket (Pull)
In Stock
This is the collet that fits in middle of 001837 & 001839
Size: 2.8" Inside Diameter
Used
MFR: Eimac
SKU: 001838-P

SK-400 Eimac Custom Air-System Socket (Pull)
In Stock
The SK-400 Air-System Socket is the recommended socket for use with the 4-400A tetrode, and it may be used as well with 4-250A, 4-125A and other tubes having the same dimensions, like the 3-500zg, or 3cx1200A7. The SK-400 provides efficient connection between the tube and its external circuits, acts as a firm mechanical support for the tube, and controls the flow of cooling air around the tube envelope.
This socket was customized by the previous owner to use a non-standard air source.
Used * No longer available for export
MFR: Eimac
SKU: SK400-P-CUSTOM
See Data Sheet
Photo is for reference only as each socket may have cosmetic differences

SK-400 Eimac Air-System Socket (Pull)
In Stock
The SK-400 Air-System Socket is the recommended socket for use with the 4-400A tetrode, and it may be used as well with 4-250A, 4-125A and other tubes having the same dimensions, like the 3-500zg, or 3cx1200A7. The SK-400 provides efficient connection between the tube and its external circuits, acts as a firm mechanical support for the tube, and controls the flow of cooling air around the tube envelope.
Used * No longer available for export
MFR: Eimac
SKU: SK400-P
See Data Sheet
Photo is for reference only

247A Johnson 7 Pin Tube Socket for 3CX1500A7 / 5894 / 829B / 7094 (Pull)
In Stock
Used * No longer available for export
MFR: Johnson
SKU: 247A-P

248 Johnson 7 Pin Tube Socket for 3CX1500A7 / 5894 / 829B / 7094 (Pull)
In Stock
Used * No longer available for export
MFR: Johnson
SKU: 248-P

248 Johnson 7 Pin Tube Socket for 3CX1500A7 / 5894 / 829B / 7094 (NOS)
In Stock
New Old Stock * No longer available for export
MFR: Johnson
SKU: 248-NOS