Microwave Sweep Generator 691 A/B

Hewlett-Packard, (HP); Palo Alto, CA

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  • Year
  • 1964 ?
  • Category
  • Service- or Lab Equipment
  • Radiomuseum.org ID
  • 339157

Click on the schematic thumbnail to request the schematic as a free document.

 Technical Specifications

  • Number of Tubes
  • 17
  • Number of Transistors
  • 37
  • Wave bands
  • Wave Bands given in the notes.
  • Power type and voltage
  • Alternating Current supply (AC) / 115/230 Volt
  • Loudspeaker
  • - - No sound reproduction output.
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Microwave Sweep Generator 691 A/B - Hewlett-Packard, HP; Palo Alto
  • Shape
  • Tablemodel with Push Buttons.
  • Dimensions (WHD)
  • 19 x 8.719 x 18.375 inch / 483 x 221 x 467 mm
  • Notes

  • The Hewlett Packard 691 A/B sweep generator has a range from 1 to 2 GHz and feature three modes of sweep operation. In the first "Normal" mode, the output frequency is swept in either directions between two continuously adjustable limits. In the "F" mode, frequency is swept about an adjustable center frequency. As a third mode these same frequency markers may be used to establish a sweep mode similar to "normal" called "marker sweep" in wich the markers determine the sweep range.

    All other characteristics are in the original attached article.

    This instrument uses 38 Transistors, 17 Tubes, 105 Diodes and 4 Voltage Regulators. Transistors, Tubes and Voltage regulators listed one per type. The list includes 18 Transistors unknown, listed without names, 3 Tubes unknown CK647 and all Diodes unknown to RMORG: 1 1N277, 59 1N458 and 44 not named.

    All characteristics and the construction are the same for 692A, 693A and 694A, except the range, that for 692 is 2 to 4 GHz, 693 is 4 to 8 GHz and 694 is 8 to 12.4 GHz. 

    A complete and detailed description of these devices in: "Models 691A, 692A, 693A, 694A Sweep Oscillators, Operating and Service Manual 02280-1", 1965, 161 pages, from Internet, courtesy of Mr. Jerry Elarton (RMORG).

  • Net weight (2.2 lb = 1 kg)
  • 75 lb (75 lb 0 oz) / 34.050 kg
  • Mentioned in
  • “Electronic Engineering”, volume 36, May 1964.
  • Literature/Schematics (1)
  • "Models 691A, 692A, 693A, 694A Sweep Oscillators, Operating and Service Manual 02280-1", 1965
  • Author
  • Model page created by Pier Antonio Aluffi. See "Data change" for further contributors.

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