Transmitting Tubes

• Rebuilt on an Eimac core
• Filament: Thoriated Tungsten
• Voltage: 7.5 + 0.37 Volts
• Current, at 7.5 volts:  50 Amps

Rebuilt * No longer available for export
MFR: Econco
SKU: 3CX2500H3-EC

Data Sheet

This rebuilt 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.

New Old Stock/New In the Box* No longer available for export.
12 month Limited Warranty against Manufacturer's defects.
NSN #: 5960000606565
MFR: ECG/Philips, USA
SKU: 6146W-ECG

Improved Military Replacement for 6146A

Not recommended As replacement for 6146B in Kenwood transceivers. 90 Day Warranty against manufacturer's defects.

NSN #: 5960-00-060-6565

New Old Stock * New In Box * No longer available for export
MFR: General Electric / JAN
NSN #: 5960-00-060-6565
SKU: 6146W-GE

Designed to function as a power amplifier tube in radio amplifiers and transceivers.
New old stock * New In Box * No longer available for export.
MFR Date: 11/1943
MFR: National Union Radio Corporation
SKU: 1625-NU

The 813 beam power tube was very popular with amateur radio operators following WW II. The tube remained a staple of amateur radio until single sideband became a popular operating mode in the late 1950's and early 1960's. Featuring a graphite plate with an ICAS dissipation rating of 125 watts the tube was very economical and a pair could provide legal limit operation (1 kilowatt input) on CW or AM. Later tubes manufactured by RCA and Amperex featured an improved plate made of zirconium-coated nickel.

New Old Stock * No longer available  for export
MFR:  RCA
SKU: 813-RCA

QB4 / 1100GA, Graphite Anode
Limited 90 Day Warranty, 
New Old Stock * No longer available for export
MFR: Amperex - Made in France
SKU: 4-400A-AMP 

Transmitting Tube 7203/4CX250B
Removed from Military Equipment - Like new condition
Used * No longer available for export
MFR: Amperex
SKU: 4CX250B-AMP-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.

This tube is not recommended as a replacement for 6146B in Kenwood transceivers.

New Old Stock * No longer available for export
NSN #: 5960-00-060-6565
SKU: 6146W-MP-GE

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.