Tubes - Transmitting, Audio, Misc.

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.

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

Requires new chimney When upgrading from 4CX250B
New Old Stock, No longer available for export
MFR: Amperex 
SKU: 8930-AMP

New Old Stock * New In the Box * No longer available for export
MFR: Amperex
Made In Holland
SKU: 6KG6-EL509-AMP-NL

QB4 / 1100GA, Graphite Anold
Used * No longer available for export
MFR: Amperex
SKU: 4-400AX-AMP-P

Limited 90 Day Warranty, 
Used * No longer available for export
 MFR: Amperex
SKU: 4-400AX-AMP-MP-P

New Old Stock * New In Box * No longer available for export
MFR: Amperex
Made in Holland
SKU: 6KG6-AMP-NL

Amperex Transmitting Tube, Broadcast/Industrial
New Old Stock * No longer available for export
MFR: Amperex
SKU: 4CX250R-AMP-NOS

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.

Designed to operate as a transmitting tube up to 500MC
New Old Stock * No longer available for export
Limited 90 Day Warranty
MFR: Amperex
SKU: 5894

Radiation cooled Twin Tetrode designed for push-pull Class C operation at frequencies up to 1000 Mhz.
New Old Stock * No longer available for export.
MFR: Amperex * Made in Holland
Limited 90 Day Warranty
SKU: 7377