The Watkins-Johnson Company was founded in 1957 in Palo Alto, CA; from 1966 onwards it was known as the Watkins-Johnson Company Telecommunications Group in Gaithersburg, MA, manufacturing communications equipment primarily for military and intelligence agencies; at last 450 people were employed.
Probably after 1998, Watkins-Johnson was acquired by Marconi and then by BAE SYSTEMS North America (British Aerospace). The Gaithersburg facility was acquired by Integrated Defense Technologies IDT in 2002 for US$146 million, which then was acquired by DRS Technologies Inc. in November 2003 (DRS Electronic Systems, Inc., 200 Professional Drive, Gaithersburg, MD 20879).
With the HF-1000, Watkins-Johnson produced a single DSP-capable semi - professional receiver after 1993, targeting radio amateurs and others.
|373A-2||1966||Triple conversion||0.5 - 30 MHz||Surveillance receiver, linear analogue display; AM, CW, FM|
|521A-3||approx. 1970||Single conversion||20 - 80 MHz||VHF surveillance receiver, analogue display and optional digital display with Nixie tubes DRO-290A-1 and integrated panoramic display|
|WJ-8888 / „Quad8“||1972||Triple conversion||0.5 - 30 MHz||AM, CW, USB, LSB, ISB, FM|
|WJ-8888B||1976||Triple conversion||0.5 - 30 MHz||identical technical specifications, 4 tuning speeds|
|WJ-8718||1976||Double conversion||5 - 30000 kHz||AM, CW, FM|
|WJ-8718A||1982||Double conversion||5 - 30000 kHz||AM, CW, FM|
|WJ-8718A/MFP||1986||Double conversion||5 - 30000 kHz||technical specifications identical, microprocessor control|
|WJ-8711 / WJ-8711A||1990||Double conversion||5 - 30000 kHz||AM, CW, LSB, USB, ISB, FM; DSP IF, AGCx2, RS 232 - Port|
|HF-1000||1993||Double conversion||5 - 30000 kHz||AM, CW, LSB, USB, ISB, FM; DSP IF, AGCx2, RS 232 - port; semi-professional successor.|