The Varian CPI VZU-6995-F6 is a high-power traveling-wave tube designed for high-frequency industrial and scientific applications including heating and radar systems. Built by Communications & Power Industries (formerly Varian), this tube delivers high gain and stable output across demanding operational environments.
Technical Specifications
RF Performance
• Gain: 70–88 dB at rated power; 78–90 dB small signal
• Gain Stability: ±0.02 dB/MHz maximum small signal slope; ±1.0 dB pk-pk across any 80 MHz band
• Input VSWR: 1.30:1 maximum
• Output VSWR: 1.30:1 maximum
• Group Delay: 0.01 ns/MHz linear (maximum in any 80 MHz band); 0.001 ns/MHz² parabolic; 0.5 ns pk-pk ripple
• Intermodulation Distortion: -23 dBc or better (with optional linearizer)
Electrical
• Power Consumption: Typically 2.3 kVA (small signal), maximum 2.8 kVA
• Power Factor: 0.95 minimum
• Inrush Current: 200% maximum
• Prime Power: 100–240 VAC universal input
– Key Features
• High gain performance across wide bandwidth with minimal slope distortion
• Tight VSWR control on input and output ports for impedance matching
• Low group delay ripple supports multi-carrier and complex modulation schemes
• Optional linearizer capability reduces intermodulation to competitive levels
• Universal AC input accommodates global power distribution standards
• Efficient power utilization with power factor ≥0.95
– Typical Applications
• High-frequency industrial heating systems
• Radar and sensing systems
• Multi-carrier RF amplification
• Scientific research requiring stable, high-gain amplification
– Compatibility & Integration
The tube integrates into systems requiring Ku-band and DBS-band operation (reference models operate 17.3–18.4 GHz). Input and output impedance matching to 50 Ω is supported. Harmonic distortion meets EN61000-3-2 compliance through power factor control.
