HP 8552A Spectrum Analyzer IF Section Operating & Service Manual 08552-90023

HP 851B Spectrum Analyzer Display Section Operating & Service Manual 1965

HP 8552B Spectrum Analyzer IF Section Operating & Service Manual Jan 1971

HP 08552-90088 Spectrum Analyzer IF Section 8552B Operating and Service Manual

HP 8553B Spectrum Analyzer RF Section Operating & Service Manual July 1971

HP Spectrum Analyzer Display Section Operating and Service Manual 851A/B

HP Spectrum Analyzer Display Section 851B Operating & Service Manual 00851-9015

HP 8551B Spectrum Analyzer RF Section Operating & Service Manual 08551-9055