Electron Tubes for Industrial, Broadcast and Ham Radio Applications




Call us Toll Free at: 877-206-5021    













GREENSTONE USA  is fast becoming the leader in the Vacuum Tubes, Vacuum Capacitor, Vacuum Relays and Vacuum Interrupter industry. Our research and development program has allowed us to stay one step ahead of the competition by manufacturing quality Vacuum Products that are beyond compare for the last 25 years.


GREENSTONE USA extensive inventory assures you that we will have the products when you need them, this allows us to guarantee same day shipping on all orders placed by 5:00 p.m. Eastern time, which in turn guarantees next day delivery of your order.

We carry a wide selection of Radio Transmitter and TV Transmitter Vacuum tubes, Vacuum capacitors and offer an excellent warranty period.

Whether it is an in stock item or a custom order, GREENSTONE USA is here to fill all of your needs and we look forward to serving you.

GREENSTONE USA manufactures replacement Vacuum tubes for equipment manufacturers such as: Harris Transmitters, Continental Electronics, Radio Frequency Services, Alloyd , Thermex Thermatron , MarkPeri , Rosenquist, Nemeth Engineering , L & L Machinery , RFC , HFT , Kabar , LaRose, Rosenquist, and many others.

We also manufacture many different types of Fixed Vacuum capacitors, Variable capacitors and Watercooled Vacuum capacitors for many different applications.


Our Vacuum products are used by many oem's in the US and overseas.



Industrial vacuum tubes
Broadcast vacuum tubes
Audio vacuum tubes
Military vacuum tubes
Ham radio vacuum tubes
CW magnetrons
Vacuum capacitors
Vacuum relays
Vacuum interrupters
Vacuum contactors
Aluminum extruded heatsinks




Copyright 2001 GREENSTONE USA All rights reserved.
Revised: October 04, 2012