This unit has a loose front knob, the knob still adjust frequency it just needs the tension nut tightened. Selling this unit AS-IS as I dont have the time or patience to disassemble. Powers on, no further testing,
The HP/Agilent/Keysight 83572A is a WR‑28 waveguide sweep‑oscillator plug‑in covering 26.5–40.0 GHz, designed for the 8350A/B sweep oscillator mainframes; it offers internally or externally leveled outputs, optional calibrated external leveling (Option 001), and optional internal pulse/square‑wave modulation (Option 006). Use the OEM service manual and datasheet for calibration, leveling setup, and connector/waveguide mating details.
| Parameter | Typical / Spec | Notes / Options |
|---|---|---|
| Frequency range | 26.5 GHz – 40.0 GHz | Full plug‑in band. |
| Frequency accuracy (25°C ±5°C) | ±100 MHz (CW) | All sweep modes wider; see manual for sweep‑mode tolerances. |
| Minimum unleveled output | ~3 dBm (83572A) | 83572B variant offers higher minimum power. |
| Externally leveled calibrated output (Opt 001) | Specified calibrated level (adds ~1 dB loss at coupler) | Option 001 supplies coupler, detector and calibration for regulated power. |
| . | ||
| Source VSWR (50 Ω nominal) | < 2.5 (internally leveled) | Externally leveled VSWR typically better. |