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Microwave Tubes – Travelling Wave Tubes (TWTs), Magnetrons and Klystrons

At TMD we understand microwave tubes. We’ve been immersed in their funny little ways for a very long time and are not easily put off by a difficult specification, an unusual application or an integration challenge.

Our tube engineering ”DNA” extends back over 60 years, to EMI Electronics’ high power klystron developments during WWII. Since then TMD has been instrumental in many of the industry’s major TWT, magnetron and klystron developments.

We design and build high reliability Microwave Tubes for Radar, EW and Communications applications. In particular TMD specialises in ring bar and ring loop TWTs from 1-18 GHz with the following features:

  • High reliability dispenser cathode technology (up to 90,000 hrs operation achieved for S band Watchman ATC radar)
  • European “Centre of Excellence” for cathode and electron gun design
  • In-house cathode technology minimising reliance on ITAR controlled parts
  • Fast warm (under 3 seconds) versions available in Ku band
    Emission testing and surface analysis facilities in-house
  • Air, land and sea platforms supported

TMD also designs and manufactures fixed frequency, agile and tuneable Magnetrons; L, C, X and Ku band.

To download Microwave Tube datasheets, please tick the boxes of the datasheets you would like to download, then enter your details in the form at the bottom of this page.

Travelling Wave Tubes

Type Number D/L
Data-
sheet
Type Freq. Range (GHz) Peak
Power
(kW)
Duty Cycle
(Max)
Gain (dB) Pulse Length
(us)
Structure
Voltage
(kW)
Peak Beam
Current
(A)
Collector Volts (Wrt. Cathode)
(kV)
Focussing Weight
(kg)
PT6055 coupled cavity 2.75-3.05 50 0.023 50 30 33 9  22 PPM 41
PT6062 ring loop 8.5-9.5 8 0.02 60 10 14.5 3 9.5 PPM 2.5
PT6067 ring loop 8.7-9.2 8 0.002 60 30 14.5 2.7 11 PPM 2.5
PT6088 ring loop 8.9-9.4 8 0.02 60 30 14.5 2.7 11 PPM 2.5
PT6074 ring loop 9.0-9.5 5.3 0.03 60 40 13.5 2 10 PPM 2.5
PT7105 ring loop 9.0-9.5 8 0.02 60 10 14.5 2.7 11 PPM 2.5
PT6156 ring loop 9.0-10.0 9 0.035 60 40 14.5 2.5 11.5/9.5 dual stage PPM 2.5
PT6073 ring loop 9.2-9.4 8.5 0.02 60 20 14.5 2.7 11 PPM 2.5
PT6744 ring loop 9.2-9.5 1 0.1 40 80 6.5 1.0 4/1.5 PPM 0.65
PT6226 ring loop 9.2-10.0 4 0.04 45 30 13.0 2.0 9.1 PPM 2.0
PT6109 ring loop 9.2-10.0 8 0.02 60 30 14.5 2.7 10 PPM 2.5
PT6713 ring loop 14.5-17.0 2 0.02 63 40 11-15 1 8.5 PPM 1
PT6715 ring loop 16.0-17.0 2 0.02 63 40 11.5 1 8 PPM 1
PT6745 ring loop 16.0-18.0 0.4 0.33 35/55* 20 8 0.35 4/5 dual stage PPM 1.5/2.0
PT6738 ring loop
(dual mode)
 16-18 3.5
0.8
0.02
0.08
60* 40 12.5
11.5
1.6
0.65
8/4.5/2.5
7.5/4.5/2.5
triple stage
PPM 1.5
PT6789 ring loop 17.0-18.0 0.8-1.0 0.33 35/55* 40 11 0.55 5/6 dual stage PPM 1.5/2.0

Magnetrons

Part D/L
Data-
sheet
Type Freq. Range (GHz) Peak
Power
(kW)
Tuning
Range (Mhz)
Duty Cycle
(Max)
Peak Anode Volts
(kW)
Peak Anode Current
(A)
Agility
Rate
(Hz)
Tuning Mechanism Weight
(kg)
PT6250 fixed 16.0-17.0 29-60 0.00126 11 8.5 2.5
PT6240 agile 16.0-17.0 35 230 0.0012 13.5 9 100 Dither 2.2
PT5065 fixed 16.0-17.0 50 0.0015 13 13 1.3
PT5064 agile 16.0-17.0 70 200 0.0012 14 15 133 Dither 3.2


TWT - PT6055
TWT - PT6062
TWT - PT6067
TWT - PT6073
TWT - PT6088
TWT - PT6226
TWT - PT6713
TWT - PT6715
TWT - PT6745
TWT - PT6789

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