Transmitting Tubes

The 4X150D tetrodes are compact power tubes intended for use as amplifiers, oscillators, or frequency multipliers at frequencies up to 500 megacycles. They are designed for operation at a heater potential of 26.5 volts.

New Old Stock * No longer available for export
MFR: RCA
SKU: 4X150D-RCA

Special purpose, broadcast/industrial High Mu Triode
New Old Stock * No longer available for export
MFR: Machlett
SKU: ML-7289-MACH

Ceramic/Glass Tetrode
HD version of 4X150D
Clean Used * No longer available for export
MFR: Amperex
SKU: 7609-AMP-P

Special purpose, broadcast/industrial High Mu Triode
New Old Stock * No longer available for export
MFR: General Electric Company
SKU: GL-2C39A-GE

These 4-400A Eimac transmiting tubes are low hour pullouts, removed from working equipment.
Clean Used * No longer available for export
MFR: Eimac * MFD: Eitel-McCullough, Inc.
NOTE: The photo is for reference only.
Ninety Day Warranty

Special purpose, broadcast/industrial High Mu Triode
New Old Stock * No longer available for export
MFR: Machlett
SKU: 7289-JAN-CAGD-MACH

Transmitting Tetrode
Glass Envelope
New Old Stock * No longer available for Export
MFR: Eimac, USA
SKU: 4-400A-EI-JAN-8438

Silver plated tubes may exhibit some silver tarnish (which does not detract from performance).  Some tubes may show faint marks from the socket in our testing equipment. All NOS tubes carry the RF PARTS Standard Limited Warranty covering workmanship and materials for 90 days.

MFR: Amperex
SKU: 8560A-AMP

The YU204 is a pulse tetrode intended for use in pulse modulator, pulsed-amplifier and pulsed-oscillator service. This compact, high vacuum radial-beam tetrode, incorporating a molybdenum anode and non-emitting grids, is recommended for use in new equipments where high voltage, high current, or high duty factor is encountered.

Clean Used * No longer available for export
MFR: Amperex
Made in France
SKU: YU-204-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.