Microwave Tubes · Klystrons
VA-125A L-Band Pulsed Klystron
Available on request
CPI (formerly Varian)
VA-125A
L-band pulsed klystron at 1.25 GHz delivering 1 MW peak output power for long-range search and tracking radar systems.
- Peak Output Power
- 1 MW
- Frequency
- 1.25 GHz
- Beam Voltage
- 100 kV
- Beam Current
- 18 A
Worldwide shipping
Cross-reference support
Grunius BV · Groningen, NL
VA-125A
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About the VA-125A
The VA-125A is a klystron manufactured by CPI (formerly Varian). L-band pulsed klystron at 1.25 GHz delivering 1 MW peak output power for long-range search and tracking radar systems.
Key ratings of the VA-125A include tube type Klystron, frequency 1.25 GHz, frequency band L-band, mode Pulsed, peak output power 1 MW and beam voltage 100 kV.
Typical applications are long-range air search radar, ground-based tracking radar, space object surveillance and military air defense systems. Notable features: 1 MW L-band peak power, 50 dB gain, water-cooled high power and long service life.
Klystrons are linear-beam microwave amplifiers delivering high gain and high peak power. They power particle accelerators, medical linacs, radar transmitters and satellite uplinks, and are usually driven by a high-voltage pulse modulator switched by a thyratron.
PartnerTubes supplies the VA-125A worldwide from Groningen, the Netherlands — availability, lead time and price are confirmed per enquiry. Our team can help with equivalent and cross-reference types, sockets and accessories, and supply programmes for OEM and maintenance customers. Interchangeability must always be confirmed for the specific equipment.
Technical specifications
| Tube Type | Klystron |
|---|---|
| Frequency | 1.25 GHz |
| Frequency Band | L-band |
| Mode | Pulsed |
| Peak Output Power | 1 MW |
| Beam Voltage | 100 kV |
| Beam Current | 18 A |
| Gain | 50 dB |
| Bandwidth | 10 MHz |
| Cooling | Water |
Specifications are indicative and based on published manufacturer data. Always verify against the official datasheet and confirm suitability for your application before ordering.
Applications & features
Used in
- Long-range air search radar
- Ground-based tracking radar
- Space object surveillance
- Military air defense systems
Key features
- 1 MW L-band peak power
- 50 dB gain
- Water-cooled high power
- Long service life
- Standard radar klystron
Related parts & equivalents
Recommended alongside or as alternatives to the VA-125A.
Similar Microwave Tubes
Comparable type, ratings, manufacturer or applications.
Modulator switch tubes
Often ordered with the VA-125A for the same system.
Frequently asked questions
What is the VA-125A?
The VA-125A is a klystron manufactured by CPI (formerly Varian). L-band pulsed klystron at 1.25 GHz delivering 1 MW peak output power for long-range search and tracking radar systems.
What are the specifications of the VA-125A?
Tube Type: Klystron; Frequency: 1.25 GHz; Frequency Band: L-band; Mode: Pulsed; Peak Output Power: 1 MW; Beam Voltage: 100 kV; Beam Current: 18 A; Gain: 50 dB; Bandwidth: 10 MHz; Cooling: Water.
What is the VA-125A used for?
The VA-125A is used in long-range air search radar, ground-based tracking radar, space object surveillance and military air defense systems.
What are alternatives or related parts to the VA-125A?
Related and comparable parts include VA-935A, VKS-7852, L-4117, EEV-K4052, YK-1271 and EEV-K3100. Contact PartnerTubes to confirm interchangeability for your equipment.
Where can I buy the VA-125A?
The VA-125A is available from PartnerTubes (Grunius BV, Groningen, Netherlands) with worldwide shipping. Availability and lead time are confirmed on request. Request a quote at https://www.partnertubes.com/contact/?part=VA-125A or email info@partnertubes.com.