Agilent 8565EC Spectrum Analyzer 9KHz-50GHz for PARTS/REPAIR

Agilent 8565EC Spectrum Analyzer 9KHz-50GHz for PARTS/REPAIR. Unit powers on, passes self-test with no errors and calibration signal can be shown. Display good, fan clean and quiet. After warm-up, unit drifts off frequency randomly up and down, an external 10 MHz reference makes no difference. No further testing performed. No manual, face cover, cables or other accessories. Handle and rubber bumpers are missing. As shown.