• Country
• United States of America (USA)

• Manufacturer / Brand
• Systron Donner; Concord CA

• Year
• 1970 ??

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 269136

• Number of Transistors
• Semiconductors present.

• Semiconductors

• Wave bands
• Wave Bands given in the notes.

• Power type and voltage
• Alternating Current supply (AC)

• Material
• Metal case

• from Radiomuseum.org
• Model: Sweeper 540 - Systron Donner; Concord CA

• Shape
• Tablemodel, low profile (big size).

• Notes

• Known with RF Plug-in 571A-1 (10 - 4.200 MHz).

  Made in USA.

• Author
• Model page created by a member from A. See "Data change" for further contributors.

• Other Models

• Here you find 10 models, 9 with images and 1 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Systron Donner; Concord CA