Varian VZC-6965F7 700W C-Band TWTA & Power Supply 01008290-00 RF Assy For Parts

Varian VZC-6965F7 700W C-Band TWTA & Power Supply 01008290-00 RF Assy For Parts

This is a matched, serialized two-unit set consisting of a Varian VZC-6965F7 700-watt C-Band traveling wave tube amplifier (TWTA) and its companion TWTA power supply (Model 01008290-00). The RF assembly carries P/N 01007747-03 and is matched by serial number to the power supply. The TWT tube has been tested and confirmed bad, with no RF output — this set is being sold strictly AS-IS for parts or repair.

Specifications & What's Included

• Manufacturer: Varian Microwave Equipment Products, Santa Clara, California
• TWTA Model: VZC-6965F7 (front panel) / VZC6965F7-7SR (label)
• RF Assembly P/N: 01007747-03
• Power Supply Model: 01008290-00
• Matched serial number: S/N 3631 (both units)
• Frequency band: C-Band
• Rated output power: 700 W
• Filament hours: approximately 32,082 (per front-panel mechanical counter)
• Power input: 120 VAC (per rear panel label on power supply)
• RF connectors: RF IN and RF OUT via waveguide flange (rear of RF assembly)
• Control connectors: JSA, JSB (D-sub), J2, J3, J4, J5 (circular MIL-style) on rear panels
• Cooling: dual large axial fans — one per chassis
• Front panel — TWTA amplifier: three digital meters (RF Drive Power, RF Reflected Power, RF Output Power); RF Drive Adjust knob; multiple illuminated pushbutton switches
• Front panel — TWTA power supply: fault and alarm LED arrays (Cover Intlk, Summ Fault, Low RF Pwr, High RF Pwr, Refl Pwr, and others); LCD display; On/Off and Beam On/Off switches; Main Power circuit breaker
• Form factor: stacked rackmount / freestanding dual-chassis configuration
• Country of manufacture: United States
• Condition: AS-IS — tube tested bad, no RF output; sold for parts or repair only
• Freight shipping required — contact us for a quote or to arrange local pickup

Applications

Traveling wave tube amplifiers in the C-Band (approximately 4–8 GHz) are used in satellite earth station uplinks, broadcast transmission, radar systems, and electronic countermeasure applications. Varian was a pioneering manufacturer of microwave vacuum tubes and TWTAs, and equipment of this type was widely used in satellite communication ground stations from the 1980s through the 2000s. A matched TWTA set like this — amplifier plus dedicated power supply — formed the core of a ground-station high-power amplifier (HPA) chain responsible for driving the uplink signal to the satellite transponder. Even with a failed tube, sets like this are sought for parts: the power supply, RF plumbing, waveguide components, control circuitry, and chassis hardware all retain value for repairs or cannibalization into other systems. The filament hours counter (~32,000 hours) reflects substantial operational service prior to tube failure.