TMD Technologies Limited
Microwave Amplifiers, Transmitters, Tubes & Power Supplies for Radar, EW, Communications & Laboratory
http://www.tmdtechnologies.co.uk/

Seimcon Associates
Semicon Associates is a world-class producer of dispenser cathodes for traveling wave tubes, cathode ray tubes, and ion lasers used in the communications, space, medical research, and defense industries.
http://www.semiconassociates.com/

Applied Nanotechnologies
ANI fabricates carbon nanotubes(CNTs) and produces carbon nanotube based devices such as x-ray tubes, microwave amplifiers, gas discharge tubes and field emission cathodes.
http://www.applied-nanotech.com

TubeTronic
tubetronic.com
http://www.tubetronic.com/

Phamitech International Company Ltd
Exporter of electron tubes, TWT, valves, thyratrons, magnetrons, klystrons, transmitting tubes, heating tubes, vacuum interrupters and X-ray tubes made in China
http://www.phamitech.com

TMD Technologies Limited
Microwave Amplifiers, Transmitters, Tubes & Power Supplies for Radar, EW, Communications & Laboratory
http://www.tmd.co.uk/

TMD Technologies Ltd.
Microwave Amplifiers, Transmitters, Tubes & Power Supplies for Radar, EW, Communications & Laboratory
http://www.tmdtechnologies.co.uk/

General Microwave Corporation
For more than 40 years, Herley has been supplying solid, innovative, and sophisticated RF, microwave and millimeter wave components and subsystems to the defense and aerospace industries
http://www.GeneralMicrowave.Com

Woken Technology Inc
Manufactures microwave/rf coaxial connectors, cables, cable assemblies, microwave/rf antennas and rf accessories and distributor for worldwide manufacturers of rf/microwave and wireless telecommunications equipment. From Taiwan.
http://www.woken.com.tw/

Raedek_Electronics
Raedek Electronics are a world wide distributor of electron tubes, Magnetrons, Thyratrons, R.F.Components, Microwave Components, and Semiconductors. Based in Stratford upon Avon in the UK.
http://www.raedek.com/