Proven performance and reliability for more than 70 years

We are market leaders in the design, development and manufacture of helix travelling wave tubes (TWTs), travelling wave tube amplifiers (TWTAs) and microwave power modules (MPMs).

TWTs remain the best source for the efficient generation of microwave power over broad frequency bandwidths. Technological advances have enabled them to become smaller, lighter and more efficient than ever

Modern TWTs are designed to sustain at least 20,000 hours of continuous operation. Many of our devices have been in service for three to five times longer than this.

Our state-of-the-art technology is used on nearly all of the major electronic warfare, radar and communication platforms across the world and a wide range of military applications.​

The Technology

Applications and Products​

Helix Travelling Wave Tubes (TWTs)
Type number Freq. (GHz) Power – min. (W) Small signal gain – min. (dB) Cathode voltage (V) Prime power (W) Duty (%) Size LxWxH (mm)
N10110 180, 260 (min 180) 45 6200 1050 CW 329 x 50 x 62​
N10110F 170, 210 (min 160) 45 6200 1050 0-100 336 x 50 x 62
N10172B 4.5 - 18 25, 125 - (min 75) 22 4550 430 0-100 195 x 30 x 27
N20143 -, 80 52 4500 340 0-100 185 x 30 x 27
N20154 13.75 - 14.5 -, 100 50 4500 400 CW 171 x 30 x 27
N20181 4.5 - 18 100, 130 (min 120)) 42 4700 580 0-100 235 x 27 x 29​​

Coupled Cavity Travelling Wave Tubes (TWTs)
Product number Freq. (GHz) POP (kW) Duty cycle Gain (db) CV (kV) CC (A) Focus system Cooling
N10503C 8.6 - 9.5 25 0.01 50 25 6 PPM
 Forced-air
N10517 16.5 - 17.0 12 0.025 45 29.5 2 PPM Liquid
N10524 5.4 - 5.9 50 0.024 51 32 9
 PPM Liquid​