SpacePath Travelling Wave Tube Amplifiers
TWTAs remain essential for extreme power and bandwidth demands, enabling much higher power outputs than SSPAs at high frequencies, such as Ka, Q and V-Band.
Exceptional data rates for Satcom, defence and scientific missions.
Our SpacePath Travelling Wave Tube Amplifiers (TWTAs) utilise third-generation high-power amplifier technology with market-leading features to streamline maintenance, drive down cost and simplify overall system operation.
Our comprehensive range of high-power amplifiers support all mission-critical satellite communication segments, including digital satellite newsgathering (DSNG), military satellite communications, large teleports, mobile applications and flyaway systems.
Unrivalled SWaP (Size, Weight and Power)
Our TWTAs are up to 40% lighter in a more compact footprint, designed for a simple retrofit. Significantly lighter weight enables a one-man lift for installation and easier access to confined spaces, driving costs down. Previously, heavy and cumbersome amps required at least a two-man team and longer time on site.
Indoor and outdoor units with modern, modular designs
Utilising modern components in our TWTA design means a more resilient supply chain, with no reliance on obsolete parts. Redundant and power combined systems are available with a universal mounting system.
UK manufacturing with full aftermarket support
Designed and built at our manufacturing facility in Hook, UK. Backed by our worldwide technical support team, we work to a 2-week turnaround on repair work.
Outdoor TWTA product range
Outdoor antenna-mount TWTAs are engineered to consistently deliver reliable, high-efficiency performance in any environment, with 1-1 and 1-2 redundancy systems available. The advanced packaging and cooling techniques enable the unit to operate in extreme environmental conditions from direct rain to direct sunlight. The amplifiers can be simply deployed anywhere in the world, are user-friendly and incorporate a comprehensive remote control facility as standard, including RS485, RS232 and Ethernet options.
Get in touch| Name | Model Number | Frequency (GHz) | TWT Power (W) | TWTA Power (W) | Datasheet |
|---|---|---|---|---|---|
| STA6140 | 400W C-Band Outdoor TWTA | 5.850-6.425 / 5.850-6.650 / 5.850-6.725 / 5.850-7.025 / 6.725-7.025 | 400 | 350 | |
| STA6175 | 750W C-Band Outdoor TWTA | 5.850-6.425 / 5.850-6.650 / 5.850-6.725 / 5.850-7.025 / 6.725-7.025 | 750 | 675 |
| Model Number | Name | Frequency (GHz) | TWT Power (W) | TWTA Power (W) | Datasheet |
|---|---|---|---|---|---|
| STA6240 | 400W X-Band Outdoor TWTA | 7.90-8.40 | 400 | 365 | |
| STA6275 | 750W X-Band Outdoor TWTA | 7.90-8.40 | 750 | 650 |
| Model Number | Name | Frequency (GHz) | TWT Power (W) | TWTA Power (W) | Datasheet |
|---|---|---|---|---|---|
| STA3318 | 180W Ku-Band Outdoor TWTA | 12.75-14.50 / 13.75-14.50 / 13.75-14.80 | 180 | 150 | |
| STA4340P | 400W Ku-Band Outdoor TWTA Peak | 13.75-14.50 / 12.75-14.50 / 13.75-14.80 / 12.75-13.25 | 400 | 180 | |
| STA5340 | 400W Ku-Band Outdoor TWTA CW | 13.75-14.50 / 12.75-14.50 / 13.75-14.80 / 12.75-13.25 | 400 | 350 | |
| STA5375 | 750W Ku-Band Outdoor TWTA | 13.75-14.50 / 12.75-14.50 / 13.75-14.80 / 12.75-13.25 | 750 | 675 | |
| STA53125P | 1250W Ku-Band Outdoor TWTA | 13.75-14.50 / 12.75-14.50 / 13.75-14.80 / 12.75-13.25 | 1250 | 565 |
| Model Number | Name | Frequency (GHz) | TWT Power (W) | TWTA Power (W) | Datasheet |
|---|---|---|---|---|---|
| STA3408 | 85W DBS-Band Outdoor TWTA | 17.30-18.10 / 17.30-18.40 | 85 | 76 | |
| STA5450 | 500W DBS-Band Outdoor TWTA | 17.30-18.10 / 17.30-18.40 | 500 | 420 | |
| STA5475 | 750W DBS-Band Outdoor TWTA | 17.30-18.10 / 17.30-18.40 / 17.30-17.80 | 750 | 675 | |
| STA54125P | 1250W DBS-Band Outdoor TWTA | 17.30-18.10 / 17.30-18.40 / 17.30-17.80 | 1250 | 565 |
| Model Number | Name | Frequency (GHz) | TWT Power (W) | TWTA Power (W) | Datasheet |
|---|---|---|---|---|---|
| STA5940P | 400W K-Band Outdoor TWTA | 22.50-23.50 | 400 | 250 | |
| STA5955P | 550W K-Band Outdoor TWTA | 22.50-23.50 | 550 | 340 |
| Model Number | Name | Frequency (GHz) | TWT Power (W) | TWTA Power (W) | Datasheet |
|---|---|---|---|---|---|
| STA4525P | 250W Ka-Band Outdoor TWTA | 27.5-30.0 / 27.0-30.0 / 28.0-30.0 / 30.0-31.0 | 250 | 110 | |
| STA45385P | 385W Ka-Band Outdoor TWTA | 27.5-30.0 / 27.0-30.0 / 28.0-30.0 / 30.0-31.0 | 385 | 135 | |
| STA5550 | 500W Ka-Band Outdoor TWTA CW | 27.5-30.0 / 27.0-30.0 / 28.0-30.0 / 30.0-31.0 | 500 | 425 | |
| STA5550P | 500W Ka-Band Outdoor TWTA PEAK | 27.5-30.0 / 27.0-30.0 / 28.0-30.0 / 30.0-31.0 | 500 | 250 | |
| STA5555P | 550W Ka-Band Outdoor TWTA | 27.5-30.0 / 27.0-30.0 / 28.0-30.0 / 30.0-31.0 | 550 | 250 | |
| STA5565P | 650W Ka-Band Outdoor TWTA | 27.5-30.0 / 27.0-30.0 / 28.0-30.0 / 30.0-31.0 | 650 | 280 | |
| STA5565P-LC | 650W Ka-Band Outdoor TWTA Liquid Cooled | 27.5-30.0 / 27.0-30.0 / 28.0-30.0 / 30.0-31.0 | 650 | 280 | |
| STA5575P | 750W Ka-Band Outdoor TWTA | 27.0-31.0 | 750 | 370 |
| Model Number | Name | Frequency (GHz) | TWT Power (W) | TWTA Power (W) | Datasheet |
|---|---|---|---|---|---|
| STA5850P | 500W Reverse Ka-Band Outdoor TWTA | 24.65 – 25.254 | 500 | 350 |
| Model Number | Name | Frequency (GHz) | TWT Power (W) | TWTA Power (W) | Datasheet |
|---|---|---|---|---|---|
| STA5618 | 180W Q-Band Outdoor TWTA | 43.50-45.50 | 180 | 130 | |
| STA5619 | 190W Q-Band Outdoor TWTA | 43.50-45.50 | 190 | 137 | |
| STA5620 | 200W Q-Band Outdoor TWTA | 43.50-45.50 | 200 | 137 |
| Model Number | Name | Frequency (GHz) | TWT Power (W) | TWTA Power (W) | Datasheet |
|---|---|---|---|---|---|
| STA5725P | 250W V-Band Outdoor TWTA | 47.20-51.40 / 47.20-52.40 | 250 | 100 |
Indoor TWTA product range
Rack-mount TWTAs incorporate an easy-to-operate, colour touch screen interface with a multi-function selector wheel. The GUI display provides clear, user-friendly status information on the amplifier’s operation, including RF output power monitoring, heater, helix monitoring, and TWT temperature. Redundancy systems are available, with set up and controlled via the built-in touch screen.
Get in touch| Model Number & Name | Frequency (GHz) | TWT Power (W) | TWTA Power (W) | Datasheet |
|---|---|---|---|---|
| STR1140 - 400W C-Band Rack Mount TWTA | 5.85-6.425 / 5.85-6.65 / 5.85-6.75 / 5.85-7.025 / 5.85-7.075 | 400 | 350 | |
| STR2175 - 750W C-Band Rack Mount TWTA | 5.85-6.425 / 5.85-6.65 / 5.85-6.75 / 5.85-7.025 / 5.85-7.075 | 750 | 650 |
| Model Number & Name | Frequency (GHz) | TWT Power (W) | TWTA Power (W) | Datasheet |
|---|---|---|---|---|
| STR1240 - 400W X-Band Rack Mount TWTA | 7.90 – 8.40 | 400 | 350 | |
| STR2275 - 750W X-Band Rack Mount TWTA | 7.90 – 8.40 | 750 | 650 |
| Model Number & Name | Frequency (GHz) | TWT Power (W) | TWTA Power (W) | Datasheet |
|---|---|---|---|---|
| STR5340 - 400W Ku-Band Rack Mount TWTA | 13.75-14.50 / 12.75-14.50 / 13.75-14.80 / 12.75-13.25 | 400 | 350 | |
| STR5375 - 750W Ku-Band Rack Mount TWTA | 13.75-14.50 / 12.75-14.50 / 13.75-14.80 / 12.75-13.25 / 12.75-14.80 | 750 | 650 |
| Model Number & Name | Frequency (GHz) | TWT Power (W) | TWTA Power (W) | Datasheet |
|---|---|---|---|---|
| STR2450 - 500W DBS-Band Rack Mount TWTA | 17.3 – 18.1 / 17.3 – 18.4 | 500 | 420 | |
| STR5475 - 750W DBS-Band Rack Mount TWTA | 17.3 – 18.1 / 17.3 – 18.4 / 17.3 – 17.8 | 750 | 650 |
Universal 1:1 and 1:2 Redundant and Power Combined Systems
We provide compact, light-weight power amplifier system solutions, including redundancy, power combining, polarity switching, load switching filtering and combinations of these.
The universal system design enables easy installation in confined spaces. Each amplifier simply slides into place, using the unique mechanical sliders and is locked and connected with the quick release waveguide connector.
Related products
Deployed in deep space gateways around the world
HWK-G1S-10-C168
HAWK 16x8 combining matrix
500-2450MHz extended L-band range, with unity gain
HWK-G1S-10-C88C88
HAWK dual 8x8 combining matrix
500-2450MHz extended L-band range, with unity gain
HWK-G1S-11-C88C88
HAWK dual 8x8 combining matrix
500-2450MHz extended L-band range, with variable gain
HWK-G2S-21-C328
HAWK 32x8 combining matrix
500-2450MHz extended L-band range, with variable gain/slope/RF detection
VTRC-100-XXXX-2408
VICTOR 24x8 combining matrix
850-2450MHz extended L-band range, with variable gain
VTRC-171-XXXX-1616
VICTOR 16x16 combining matrix
50-2500MHz IF/L-band range, with variable gain
We support customers in over 130 countries, with over 40 years of experience in design and manufacturing.
“ETL Systems has an exceptional research and development team, who we've worked with for years and on multiple key projects. The reputation for excellent performance and reliability is now available at an even better cost point, thanks to modular GENUS technology.”
System Integration Engineer
Pals Electronics
“Being responsible for the design and engineering of our entire headend for live TV services, I can confidently say that ETL equipment is at the core of our operations. We've been using ETL's Enigma Switch Matrix, originally purchased as a 64x256 in 2007, and it’s still running perfectly. The durability of ETL is remarkable - you simply can’t break it.”
Head of ENG, EFP and RF Transmission
VRT
“What sets ETL apart is their exceptional RF specifications. The equipment we installed back in 2006, like the matrix at RTL, is still running smoothly. The same goes for all our other clients. Issues are rare, but when they arise, ETL’s support is always reliable. This is why clients continue to trust and return to ETL time and time again.”
Product Manager
Diginet
1/3
Engineered for Reliable RF Performance
Every RF environment is unique. Our expert engineers design and manufacture systems tailored to your specifications — ensuring unmatched scalability, reliability, and performance.